watchOS

A customized watch face on watchOS 6

Developer| Apple
Written in|

* C
* C++
* Objective-C
* Swift
* assembly language

OS family|

Unix-like, iOS based on Darwin

Working state| Current
Source model| Closed, with open-source components
Initial release| April 24, 2015; 11 years ago (2015-04-24)
|Final release|Latest release}}| 10.3[1] (January 22, 2024; 2 years ago (2024-01-22)) [±]

Marketing target| Smartwatch
Available in| 45 languages[2][3]
Update method| OTA (via iPhone 5\+ running iOS 8.2+)
Platforms|

* ARMv8-A (5.0–present)
* ARMv7-A (1.0–8.8.2)

Kernel type| Hybrid (XNU)
Default user interface| Cocoa Touch (GUI)
License| Proprietary software except for open-source components
Official website| apple.com/os/watchos
Articles in the series
iOS
iPadOS
macOS
visionOS
tvOS

watchOS is the operating system of the Apple Watch, developed by Apple. It is based on iOS, the operating system used by the iPhone, and has many similar features.[4] It was released on April 24, 2015, along with the Apple Watch, the only device that runs watchOS. watchOS exposes an API called WatchKit for developer use.

The second version, watchOS 2, included support for native third-party apps and other improvements, and was released on September 21, 2015.[5][6][7] The third version, watchOS 3, was released on September 13, 2016, to emphasize better performance and include new watch faces and stock apps. The fourth version, watchOS 4, was released on September 19, 2017. The fifth version, watchOS 5, was released on September 17, 2018,[8] to add more third-party support and new workouts, along with the "Walkie-Talkie" feature.[9] The sixth version, watchOS 6, was released on September 19, 2019.[10] The seventh version, watchOS 7, was released on September 16, 2020, to support handwashing and sleep tracking.[11][12] The eighth version, watchOS 8, was released on September 20, 2021, with updates in health monitoring, visuals, and apps.[13] The ninth version, watchOS 9, was released on September 12, 2022. The tenth version, watchOS 10, was released on September 18, 2023. The 11th version, watchOS 11, was released on September 16, 2024. The 12th and current version, watchOS 26, was released on September 15, 2025.

## Contents

* 1 Interface overview
* 2 Supported health metrics
* 3 HealthKit
* 4 Version history
* 4.1 Overview
* 4.2 watchOS 1
* 4.3 watchOS 2
* 4.4 watchOS 3
* 4.5 watchOS 4
* 4.6 watchOS 5
* 4.7 watchOS 6
* 4.8 watchOS 7
* 4.9 watchOS 8
* 4.10 watchOS 9
* 4.11 watchOS 10
* 4.12 watchOS 11
* 4.13 watchOS 26
* 5 Hardware support
* 6 References
* 7 External links

## Interface overview

The home screen, rendered by and also known as "Carousel",[4] consists of circular application icons that can be launched by touching the display, which allows users to access their favorite apps.

Prior to watchOS 3, "Glances" offered quick access to summaries of the most frequently used native and third-party applications.[14] The Glances view was opened with a swipe-up gesture from the watch face screen. In watchOS 3, Glances were replaced with a redesigned Control Center that mirrors the functionality seen in iOS, providing a more unified experience across Apple devices. The Control Center is accessed with a swipe-up gesture from the watch face screen. Additionally, the friends menu, previously activated with the side button, was repurposed as a dedicated dock for apps, enhancing multitasking and app management.

Prior to watchOS 7, different actions and options appeared depending on whether the user taps or deep-presses, detected with the pressure-sensitive (Force Touch) Display.[15] Force Touch was completely removed in watchOS 7, and all actions requiring the feature were moved to specific options in the Settings app or to long-press actions.[16] With the launch of watchOS 7, Force Touch technology was phased out. This feature was replaced by additional options in the Settings app and extended press gestures to accommodate all necessary interactions, making it more consistent with other Apple devices that do not support Force Touch.

## Supported health metrics

Since its inception, watchOS has supported an increasing number and variety of health metrics for measurement and tracking. These include:

* heart rate
* maximal aerobic capacity, otherwise known as VO2 max. (added in watchOS 4,[17] enhanced in watchOS 7[18][19][20])
* electrocardiogram, otherwise known as EKG or ECG (added in watchOS 5.1.2[21])
* blood oxygen saturation, otherwise known as SpO2 (added in watchOS 7[18])
* menstrual cycle status (added in watchOS 6[22])
* sleep duration & respiratory rate tracking (added in watchOS 7[23][24])
* body temperature tracking (added in watchOS 9[25])
* sleep apnea detection (added in watchOS 11[26])

## HealthKit

For several years, Apple has been developing its HealthKit product in an attempt to penetrate the lucrative healthcare and wellness industry, which CB Insights believe holds a huge growth opportunity for Apple.[27] This was confirmed by Jony Ive, Apple's former chief designer, in an interview. He said that health was a crucial element in the Apple Watch since the day of its inception and that the developmental trajectory of the hardware and the watchOS were geared towards health-based capabilities.[28] Ive pointed out that one of the primary apps that shipped with the first watchOS allowed users to track and communicate as well as encourage them to move, exercise, and stand. He said:

> Many of us have our phones with us all the time, but they aren't connected to you. Imagine having something this powerful with you at all times, and what opportunities that might present to the user. The opportunity is phenomenal. Particularly when [you] don't understand just where we are today in terms of technology and capability, but where we are headed.[28]

Applications have been developed for watchOS that not only keep users active but also diagnose illnesses. For example, the app called DeepHeart, a deep-learning network that can detect atrial fibrillation, hypertension, sleep apnea, and diabetes.[29] It taps into the HealthKit platform to collect data, particularly those collected by the Apple Watch's heart sensor.[30]

## Version history

### Overview

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Overview of watchOS versions  Version  | Initial release date  | Latest version  | Build number  | Latest release date  | Device end-of-life

|
|
|
|
|

Apple Watch  | iPhone
watchOS 1  | 2015-04-24  | 1.0.1  | 12S632  | 2015-05-19  | N/A  | N/A
watchOS 2  | 2015-09-21  | 2.2.2  | 13V604  | 2016-07-18
watchOS 3  | 2016-09-13  | 3.2.3  | 14V753  | 2017-07-19  | 5, 5C
watchOS 4  | 2017-09-19  | 4.3.2  | 15U70  | 2018-07-09  | 1st  | N/A
watchOS 5  | 2018-09-17  | 5.3.10  | 16U711  | 2026-03-24  | N/A  | 5S, 6
watchOS 6  | 2019-09-19  | 6.3.1  | 17U224  | 2026-02-02  | Series 1, Series 2 | N/A
watchOS 7  | 2020-09-16  | 7.6.2  | 18U80  | 2021-09-13  | N/A  | N/A
watchOS 8  | 2021-09-20  | 8.8.2  | 19U526  | 2026-03-24  | Series 3 | 6S, SE (1st), 7
watchOS 9  | 2022-09-12  | 9.6.4  | 20U512  | 2026-02-02  | N/A  | 8, X
watchOS 10  | 2023-09-18  | 10.6.2  | 21U594  | 2026-02-02  | Series 4, Series 5, SE (1st)  | N/A
watchOS 11  | 2024-09-16  | 11.6.2  | 22U84  | 2026-02-05  | N/A  | XS, XR
watchOS 26  | 2025-09-15  | 26.4  | 23T240  | 2026-03-24  | TBA
26.5 beta 1  | 23T5441h  | 2026  |
{{{2}}}

### watchOS 1

The first version of watchOS 1 was 1.0 and was based on iOS 8.2. The second version of watchOS 1 was 1.0.1 and was based on iOS 8.3.

Overview of watchOS 1 versions

watchOS version  | iOS version based on  | Build  | Release date | Features
1.0  | 8.2[31] | 12S507  | 2015  |

Initial release on Apple Watch (1st Generation).

* UI
* Free-floating Circular app icons in home screen.
* Zoom in with Digital Crown.
* 9 watch faces:[32] Chronograph, Color, Modular, Utility, Mickey Mouse, Simple, Motion, Solar, Astronomy
* 20 stock apps:[33] Activity, Alarm, Calendar, Camera Remote, Mail, Maps, Messages, Music, Passbook, Phone, Photos, Remote, Settings, Siri, Stocks, Stopwatch, Timer, Weather, Workout, World Clock.

1.0.1[34] | 8.3[31] | 12S632  | 2015  |

* Display support for new Emoji characters.
* Notification screen UI tweaks.
* Improved performance:
* Free floating Circular app icons in home screen.
* Zoom in with Digital Crown.
* Siri.
* Measuring stand activity.
* Calculating calories for indoor cycling and rowing workouts.
* Distance and pace during outdoor walk and run.
* Accessibility.
* Third-party apps.
* Wrist Raise (more sensitive to real-life wrist raises).
* Additional language support: Brazilian Portuguese, Danish, Dutch, Swedish, Russian, Thai, Turkish.
* Security fixes[35]

### watchOS 2

Overview of watchOS 2 versions[36]

watchOS version  | iOS version based on  | Build  | Release date | Features
2.0[37] | 9.0[31] | 13S344  | 2015  |

New Watch faces

* Time-lapse face: Hong Kong, London, Mack Lake, New York, Shanghai, Paris
* Photo & Photo album faces with support for Live Photos
* New Time Travel function where you can see both past and future events
* Nightstand Mode
* 9 new colors for customization
* New multicolor Modular face
* 3rd party apps Complications support

Siri

* Workout and Maps support
* FaceTime audio calling and email replying support
* HomeKit support
* Added support in following countries: Austria, Belgium, Norway

Activity and Workout

* Workouts done in 3rd-party apps will be included in Activity rings
* Sharing support from Activity app on iPhone
* Interactive achievements
* Weekly Summary
* Activity notifications can now be muted for a day
* Workouts can now be automatically saved

Apple Pay and Wallet

* Discover cards support
* Reward cards, store credit and debit cards support
* Passes can now be added from 3rd party apps

Friends

* You can now add more than 12 friends to your Watch
* Groups support
* Multicolor sketches support
* Animated emoji support

Maps

* New Transit view in selected cities
* List of directions can now be shown
* Station placards support with departure information

Music

* New Beats 1 Radio support
* New Quick Play button for Apple Music

Miscellaneous

* You can now reply to emails right from your Watch using dictation, emoji, or smart replies
* Support for FaceTime audio calls
* Support for Wi-Fi calling
* Activation Lock – No one can activate an Apple Watch without a proper Apple ID and password
* New system languages: English (India), Finnish, Indonesian, Norwegian, Polish
* Dictation support extended to include the following languages:
* Dutch (Belgium)
* English (Ireland, Philippines, South Africa)
* French (Belgium)
* German (Austria)
* Spanish (Chile, Colombia)
* Smart replies support extended to include the following languages:
* Traditional Chinese (Hong Kong, Taiwan)
* Danish
* Dutch
* English (New Zealand, Singapore)
* Japanese
* Korean
* Swedish
* Thai

Developer

* Native SDK support
* 3rd-party apps can now access the accelerometer, heart rate sensor, microphone, Taptic Engine, and Digital Crown
* You can now play videos directly on your Watch
* You can now run apps without your iPhone with a Wi-Fi connection
* Complications for watch faces support
* Support for Workouts from 3rd party apps – Metrics will count toward the Activity rings as well as included in the Activity app on iPhone

2.0.1[37] | 9.1  | 13S428  | 2015  |

* New emoji
* Bug fixes

2.1[37] | 9.2  | 13S661  | 2015  |

* New system languages: Arabic, Czech, Greek, Hebrew, Hungarian, Malay, Portuguese (Portugal), Vietnamese
* Right-to-left language support
* In Arabic, switch between Latin and Hindi numerals
* New Complication for Islamic and Hebrew calendars
* Siri support extended to include Arabic (Saudi Arabia, United Arab Emirates)
* Dictation support extended to include the following languages:
* Arabic (Saudi Arabia, United Arab Emirates)
* English (Malaysia)
* Czech
* Greek
* Hebrew
* Hungarian
* Portuguese (Portugal)
* Vietnamese
* Bug fixes

2.2[37] | 9.3  | 13V144  | 2016  |

* You can now pair 2+ Apple Watches to a single iPhone
* New Nearby function in Maps
* New system languages: Catalan, Croatian, Slovak, Romanian, Ukrainian
* Dictation support extended to include the following languages:
* Catalan
* Croatian
* Slovak
* Romanian
* Ukrainian
* English (Saudi Arabia, UAE, and Indonesia)
* Siri support extended to include Malay, Finnish, and Hebrew
* Background heart rate measurements have their frequency increased when you're stationary

2.2.1[37] | 9.3.2  | 13V420  | 2016  |

* General performance and stability improvements.

2.2.2[37] | 9.3.3  | 13V604  | 2016  |

* General performance and stability improvements.

### watchOS 3

Overview of watchOS 3 versions[38]

watchOS version  | iOS version based on  | Build  | Release date | Features
3.0  | 10.0  | 14S326  | 2016  |

* Initial Release on Apple Watch Series 1 (Dual-Core) and Apple Watch Series 2 (Dual-Core)

Navigation

* Favorite apps in Dock
* Apps in Dock updates with up-to-date information on launch
* Dock can contain up to 10 apps
* Simple switch to different watch face with a swipe
* Control Center can be toggled with a swipe up

New Watch faces

* Minnie Mouse face
* Activity faces
* Numerals faces
* Complications support for Photo, Photo Album, Timelapse, and Motion faces
* New Complications: Workout, Music, and Messages, etc.
* Face Gallery in Apple Watch app on iPhone
* 3rd-party Complications support

Activity

* Share and compare activity rings
* Activity progress notifications for a person you have shared your activity progress with
* Smart replies for above notifications
* New "Sharing" tab on Activity app on iPhone

Workout

* Quick start
* Customizable metrics view
* Gestures support for pausing, resuming, or marking segments
* Support for "Other" workouts not listed in built-in workout types
* Auto-pause in running workouts for inactivity
* Siri support
* Route maps with a speed indicator (Outdoor workouts only)

For Wheelchairs

* Activity rings support for people using a wheelchair
* Pushes now contribute to the move ring
* Stand ring and "Time to Stand" notification substituted with Roll ring and "Time to Roll" notification
* Outdoor Run or Walk pace workouts

Breathe app

* New app for breathing sessions
* Visualization and haptics indicate when to inhale or exhale
* Adjustments for session length and amount of breaths per minute
* Summary with heart rate
* "Time to Breathe" notifications
* Weekly Summary

Communication

* Full-screen effects for celebrations
* Tap to quick reply
* Animations for handwritten messages
* Send built-in or 3rd party stickers
* Ability to view secret messages
* Replies now available in Messages and Mail notifications
* New and redesigned emojis

Scribble

* Write directly on Apple Watch and it will automatically convert to text
* Scroll through predictions with Digital Crown
* Available in English, Simplified Chinese, and Traditional Chinese

Emergency SOS

* You can now call emergency services by pressing and holding the side button
* Your SOS contacts will be notified with your location
* You can also display your Medical ID stored on your Watch
* Emergency numbers are automatically adjusted per your location

Home

* New app to control accessories through HomeKit
* You can now control all your accessories directly from your wrist
* IP camera support: Watch live video with controls and notifications directly on your Watch

Miscellaneous

* New Reminders app
* New Find My Friends app
* Apple Pay support in 3rd-party apps
* New controls in the Calendar app: You can now delete events or switch calendars
* FaceTime audio calls support
* Search for Settings on Apple Watch app on iPhone
* New remote camera controls: Flash, Live Photos, HDR, Zoom, Burst, and facing
* New Siri languages: Spanish (Chile), Cantonese, English (Ireland), English (South Africa)

3.1  | 10.1  | 14S471  | 2016  |

* Bubbles and fullscreen effects on Messages can now be replayed
* Reduce Motion of Messages effects
* Bug fixes

3.1.1  | 10.2  | 14S883  | 2016  |

Update withdrawn due to reports of Apple Watches no longer working after the update[39]

3.1.3  | 10.2.1  | 14S960  | 2017  |

* Includes fixes from watchOS 3.1.1

3.2  | 10.3  | 14V249  | 2017  |

* Siri now works with 3rd-party apps with features including
* Start a workout
* Send messages
* Make payments
* Book rides
* Theater Mode
* New Scribble languages: French, Spanish, Italian
* Sync progress for music playlists is now displayed in the Apple Watch app on iPhone

3.2.2  | 10.3.2  | 14V485  | 2017  |

* Bug fixes.

3.2.3  | 10.3.3  | 14V753  | 2017  |

* Bug fixes.
* Final version to support iPhone 5 and iPhone 5C

### watchOS 4

Overview of watchOS 4 versions[40]

watchOS version  | iOS version based on  | Build  | Release date | Features
4.0  | 11.0  | 15R372  | 2017  |

Initial release on Apple Watch Series 3

Drops support for iPhone 5 and iPhone 5C

New Watch faces

* Siri face with updates based on time, location, and daily routines
* Toy Story face with animated Toy Story characters
* Kaleidoscope face with static images turning into patterns
* Siri, News, Heart Rate, Now Playing, Messages Complications

Activity

* Personalized notifications
* Monthly challenges
* Full Screen animations for achievements and rings closed
* Workout metrics included in replies for Activity Sharing notifications

Workout

* App completely redesigned
* High Intensity Interval Training workout support
* Multiple workouts in a single session support
* Auto sets for Pool Swim workouts
* Synced music playlist support when starting workouts (Apple Watch 1st gen not supported)
* Music controls right inside the app
* Do Not Disturb can be automatically turned on when starting workouts

Heart Rate

* Graphs for all-day heart rate
* New measurements including resting rate, walking average, workout average, workout high, recovery, and Breathe sessions
* High Heart Rate notifications support (Apple Watch 1st gen not supported)
* New Heart Rate data on iPhone including Heart Rate Variability and VO2 max.

Music

* App completely redesigned
* Multiple playlists sync support for local playback with Bluetooth headphones
* Apple Music curated playlists sync support, includes Heavy Rotation, My New Music Mix, and My Favorites Mix

Miscellaneous

* News app added
* Flashlight and Safety Light can be toggled through Control Center
* Recent used apps in Dock
* App home screen in alphabetical view
* Gestures support in Mail
* Dialer pad right inside Phone app
* Conflicts for Calendar invites can now be displayed
* New language for Scribble: German
* New timers: sub-minute and repeating
* Recent locations and suggestions in Maps
* Contacts in Smart Reply, includes location

4.0.1  | 11.0  | 15R654  | 2017  | Apple Watch Series 3 (GPS + Cellular) only

* Bug fixes

4.1  | 11.1  | 15R846  | 2017  |

* Music streaming support on Apple Music or iCloud Music Library (Apple Watch Series 3 only)
* New Radio app: Beats 1 Live Radio, custom stations, and expert-curated stations (Apple Watch Series 3 only)
* Find, discover, and play songs, albums, or albums using Siri
* Fitness data syncing support for more accurate metrics on GymKit-enabled treadmills, ellipticals, stair steppers, and indoor bikes
* Ability to disconnect from a Wi-Fi network right in Control Center (Apple Watch Series 3 GPS + Cellular model only)
* Mandarin Chinese now set as default dictation language in China
* Bug fixes

4.2  | 11.2  | 15S102  | 2017  |

* Apple Pay Cash support (US only)
* HomeKit sprinklers and faucet support
* 3rd-party app Workouts: distance, average Speed, number of runs, elevation descended for downhill snow sports (Apple Watch Series 3 only)
* Bug fixes

4.2.2  | 11.2  | 15S542  | 2018  |

* This update includes improvements and bug fixes.

4.2.3  | 11.2  | 15S600b  | 2018  |

* Fixes an issue where using certain character sequences could cause apps to crash.

4.3  | 11.3  | 15T212  | 2018  |

* HomePod volume and playback control support
* Regaining control of music on iPhone
* Multiple orientation support on Nightstand mode
* Activity rings progress and new songs to Apple Music mixes are now shown on the Siri watch face
* Bug fixes

4.3.1  | 11.4  | 15T567  | 2018  |

* Fixes an issue which caused Apple Watch to sometimes remain at the Apple Logo during startup for some users.

4.3.2  | 11.4.1  | 15U70  | 2018  | Final release supported on Apple Watch (1st generation)

* This update includes improvements and bug fixes.

### watchOS 5

watchOS 5 was first shown to the public at the 2018 San Jose WWDC developer conference held on June 4, 2018 by Apple. It had an instant watch-to-watch Walkie-Talkie mode.[41] With this release, Apple dropped support for the first generation Apple Watch. watchOS 5 was the first version of watchOS to bring 64-bit support.

Overview of watchOS 5 versions[42]

watchOS version  | iOS version based on  | Build  | Release date | Features
5.0  | 12.0  | 16R364  | 2018  |

Initial Release on Apple Watch Series 4

Drops support for the Apple Watch (1st generation)

* Workout
* Compete with Friends notifications
* Auto detect workout and notification to turn off workout when done
* New workouts: Yoga and Hiking
* Pace Alerts and Cadence
* Podcasts
* New app for watchOS
* Download episodes of podcasts for listening
* Stream your favorite podcasts on the go (Series 3 and later only)
* Walkie-Talkie
* A new watchOS app that allows you to do FaceTime Audio calls similar to talking on a walkie-talkie
* Siri
* Watchface adds 3rd-party access to Siri
* Raise to Speak. No longer need to say "Hey Siri" to activate (Series 3 and later only)
* Integrate with shortcuts like "I am on my way home" and Siri will start playing your favorite playlist on the way home
* Notifications
* Grouped notifications
* More actions you can do with Notifications
* Can view webpages from iMessages
* Do Not Disturb
* Can schedule Do Not Disturb events when leaving a location or just for a specific time period
* Student ID Cards

5.0.1  | 12.0  | 16R381/16R382  | 2018  | Improvements and bug fixes
5.1  | 12.1  | 16R591  | 2018  | Update withdrawn due to reports of Apple Watches no longer working after the update[43]
5.1.1  | 12.1  | 16R600  | 2018  |

Improvements and bug fixes

* Addresses a problem in the WatchOS 5.1 update leading to non-functional Apple Watches.
* Improvements to Series 4 automatic fall detection.
* Resolves a problem with completing setup of Walkie-Talkie.
* Resolves a problem with sending and receiving invitations for Walkie-Talkie.
* Resolves missing earned Activity awards.

5.1.2  | 12.1.1  | 16S46  | 2018  |

* New ECG app for Apple Watch Series 4 (US and US territories only)
* Irregular rhythm notification (US and US territories only)
* AFiB notification
* Other improvements and bug fixes

5.1.3  | 12.1.3  | 16S535  | 2019  | This update includes improvements and bug fixes.
5.2  | 12.2  | 16T225  | 2019  |

* ECG app extended to Austria, Belgium, Denmark, Finland, France, Germany, Greece, Hong Kong, Hungary, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Romania, Spain, Sweden, Switzerland, and the UK
* Irregular rhythm notification extended to countries listed above
* 2nd gen AirPods support
* Real-time text support for phone calls

5.2.1  | 12.3  | 16U113  | 2019  |

* ECG app extended to Croatia, Czechia, Iceland, Poland, and Slovakia
* Irregular rhythm notification extended to countries listed above
* New Pride watch face
* Other bug fixes

5.3  | 12.4  | 16U569  | 2019  |

* ECG app extended to Canada and Singapore
* Irregular rhythm notification extended to countries listed above
* Security fix for Walkie-Talkie app that could enable the owner's iPhone to be eavesdropped[44]

5.3.1  | 12.4.1  | 16U600  | 2019  |

* Re-patches a security vulnerability that was accidentally unpatched in the previous update

Post-watchOS 5 Updates for watches paired with an iOS 12.x iPhone (to support iPhone 5S and iPhone 6/6 Plus)
5.3.2  | 12.4.2  | 16U611  | 2019  | Apple Watch Series 1 and Apple Watch Series 2 only

* Security update for Series 1 and Series 2 watches[45]

5.3.3  | 12.4.3  | 16U620  | 2019

* Important security updates

5.3.4  | 12.4.4  | 16U627[46] | 2019  |

* Security update for Series 1, 2, 3, and 4 watches[47]

5.3.5  | 12.4.5  | 16U652[48] | 2020  |

* Update for Series 1, 2, 3, and 4 watches with heart rhythm notification bug fix[49]

No published security notes.[50]

5.3.6  | 12.4.6  | 16U662  | 2020  |

* Important security updates

No published security notes.[50]

5.3.7  | 12.4.7  | 16U674  | 2020  |

* Improvements and bug fixes

Security notes

5.3.8  | 12.4.8  | 16U680  | 2020  |

* Improvements and bug fixes

No published security notes.[50]

5.3.9  | 12.4.9  | 16U693  | 2020  |

* Improvements and bug fixes

Security notes

5.3.10  | 12.5.8  | 16U711  | March 24, 2026 | Final version to support iPhone 5S, iPhone 6, iPhone 6 Plus

* Extends device certificate required by iMessage, FaceTime, and device activation to continue working past January 2027

### watchOS 6

Apple announced a new version of watchOS that would contain features such as the App Store, a calculator with tip tools, an audiobooks app, noise level monitoring, and Apple's Voice Memos app, at WWDC 2019 held on June 3, 2019.[51][52][53] It also enables special games that can only be played on the Watch interface. With this release, Apple dropped support for iPhone 5s, 6, and 6 Plus. However, watchOS 6 has limited support on Apple Watch Series 1 and 2. watchOS 6.3 is the final release supported on the Apple Watch Series 1 and 2.

Overview of watchOS 6 versions[54]

watchOS version  | iOS version based on  | Build  | Release date | Features
6.0  | 13.0  | 17R575  | 2019  |

Initial Release on Apple Watch Series 5

Not released for Apple Watch Series 1 and 2

Drops support for iPhone 5s, iPhone 6 and iPhone 6 Plus

* Cycle Tracking
* New Cycle Tracking app for tracking menstrual cycle and fertility metrics
* Notifications predicting a person's next menstrual cycle and fertile window.
* Noise (Series 4 or later only)
* New Noise app for detecting decibel levels in your surroundings.
* Notifications can be pushed when it detects that the noise in your surrounding is too high.
* Voice Memos
* New Voice Memos app for recording and listening to voice memos directly on Apple Watch
* Synced across all your devices as well.
* Audiobooks
* Now you can sync up to 5 hours of audiobooks to your Apple Watch
* Stream them when your Watch is connected via Wi-Fi or cellular
* App store
* New built-in App Store where you can find and download apps for your Watch.
* Supports Sign in with Apple
* Activity Trends
* Activity Trends in Activity app which includes all three activity rings, stand minutes, walking distance, walking pace, running pace, and VO2 max.
* These are compared with data averaged over the last 90 days to the wearer's performance over the last year.
* Tips are given if a single trend is going down.
* Workout
* New elevation metrics for Outdoor Run, Outdoor Walk, Outdoor Cycle, and Hiking workouts (Series 2 or later only)
* Stopwatch app can now be viewed on your watch face during workouts
* GymKit support for True and Woodway
* Siri
* Now you can identify songs directly on your Watch—with the ability to add identified songs to your Apple Music library
* New Siri Web Search—shows up to 5 online results with the ability to view optimized Web content.
* Siri integration into the redesigned Find People app
* Watch Faces
* New Faces
*         * Numerals Mono and Numerals Duo (Available in Arabic, Arabic Indic, Roman numerals, and Devanagari)
* Meridian—black or white dial which fills the screen and includes 4 complications (Series 4 or later only)
* Gradient—Design dynamically changes as time passes. Available in full screen or circular with 5 complications (Series 4 or later only)
* California—Supports multiple numeral styles in Roman, Arabic, and Devanagari in fullscreen or circular (Series 4 or later only)
* Solar Dial—Depicts the Sun's path in circular form across a 24-hour dial (Series 4 or later only)
* Modular Compact—With many complications and the option to choose between analog or digital time (Series 4 or later only)
* Tap to speak on all watch faces, supports up to 30 languages
* Receive and customize time-keeping chimes (An alert on the hour, every half hour or every 15 minutes, either with haptics or customizable chimes)
* Now you can reorder your Watch faces directly on your Watch
* New complications
* Audiobooks
* Calculator
* Cellular connectivity
* Cycle Tracking
* Noise
* Wind
* Rain
* Voice memos
* New monochrome complications for Infograph and Infograph Modular faces
* Miscellaneous
* New Calculator app with the ability to calculate tips and split checks
* Support for custom stations in the Podcasts app
* Smart Guidance and spoken navigation in Maps
* Redesigned Now Playing app with Apple TV Remote controls
* Personalized music picks in the For You tab
* Support for automatic software updates
* Redesigned Walkie-Talkie app
* Redesigned Find People app which allows you to add friends, set notifications, and change settings directly on your Watch
* Redesigned Reminders app with shared lists, subtasks, and the ability to add new reminders
* More settings for Accessibility, Workout, and Health

6.0.1  | 13.1  | 17R604/17R605  | 2019  | Not released for Apple Watch Series 1 and 2

Improvements and bug fixes

* Resolves an issue where the Mickey Mouse and Minnie Mouse watch faces do not speak time.
* Addresses an issue where the calendar complication may not display events.
* Fixes a bug that could result in a loss of display calibration data.

6.1  | 13.2  | 17S84  | 2019  | First version of watchOS 6.x to support Apple Watch Series 1 and 2

* Support for AirPods Pro
* Other improvements and bug fixes
* Brings watchOS 6 to Apple Watch Series 1 and Series 2

6.1.1  | 13.3  | 17S449  | 2019  |

* Important security updates

6.1.2  | 13.3.1  | 17S796  | 2020  |

* Important security updates

Security notes

6.1.3  |  | 17S811  | 2020  |

* Heart rhythm notification bug fix

No published security notes.[50]

6.2  | 13.4  | 17T529  | 2020  |

* Brings ECG app and irregular heart rhythm notifications to Chile, Turkey, and New Zealand
* Brings in-app purchases to Apple Watch apps
* Fixes music playback issues when switching from Wi-Fi to Bluetooth

Security notes

6.2.1  | 13.4.1  | 17T530  | 2020  |

* Fixes an issue that prevented FaceTime audio calls with devices running iOS 9.3.6 and earlier or Macs running OS X El Captain 10.11.6 and earlier from working

No published security notes.[50]

6.2.5  | 13.5  | 17T608  | 2020  |

* ECG app on Apple Watch Series 4 or later now available in Saudi Arabia
* Irregular heart rhythm notifications now available in Saudi Arabia

Security notes

6.2.6  | 13.5.1  | 17T620  | 2020  |

* Important security updates

Security notes

6.2.8  | 13.6  | 17U63  | 2020  |

* ECG app on Apple Watch Series 4 or later now available in Bahrain, Brazil, and South Africa
* Irregular heart rhythm notifications now available in Bahrain, Brazil, and South Africa
* Digital car keys support for Apple Watch Series 5

Security notes

13.6.1  | 2020
13.7  | 2020
Post-watchOS 7 Updates for watches paired with an iOS 13.x iPhone (for users who deferred updating to iOS 14)
6.2.9  | 13.7  | 17U203  | 2020  | Apple Watch Series 1 and Apple Watch Series 2 only

* Improvements and bug fixes

Security notes

6.3  | 17U208  | 2020  |

* Improvements and bug fixes

Security notes

6.3.1  | 17U224  | 2026  | Final version to support the Apple Watch Series 1 and 2

* Extends device certificate required by iMessage, FaceTime, and device activation to continue working past January 2027

### watchOS 7

Apple announced watchOS 7 at the 2020 Worldwide Developers Conference on June 22, 2020. With watchOS 7, Apple dropped support for Apple Watch Series 1 and 2. watchOS 7 has limited support on the Apple Watch Series 3.

Overview of watchOS 7 versions[55]

watchOS version  | iOS version based on  | Build  | Release date | Features
7.0  | iOS 14.0 | 18R382  | 2020  |

Initial Release on Apple Watch SE and Apple Watch Series 6

Drops support for the Apple Watch Series 1 and Apple Watch Series 2

* Watch Faces
* Updated Faces
* Chronograph Pro gains a tachymeter (Series 4 or later only)
* X-Large adds support for one large complication
* Photos face provides colour filters for pictures and more customization options
* Updated colours for many watch faces
* Complications
* Apps may now include more than one complication
* New and/or updated Sleep, Shortcuts, Camera Remote, Moon Phase and World Clock complications
* Watch Face Sharing
* Ability to share custom Watch Faces through Mail, Messages, or posting a link
* Sleep Tracking
* Apple Watch uses the accelerometer to measure sleep
* See logged sleep, manage schedules and set alarms in the new Sleep app
* New alarm sounds and haptics
* Wind Down mode
* Sleep Mode automatically enables Do Not Disturb and disables Raise to Wake
* Reminders to charge your Apple Watch in the evening if below 30% charge
* Notifications on iPhone when Apple Watch is finished charging
* Wake up screen displays after your alarm, showing the weather and your battery level
* Activity
* Workouts
* New Dance, Functional Strength Training, Core Training and Cooldown workouts
* Mobility Metrics
* Support for low-range cardio fitness, walking speed, stair-descent speed, stair-ascent speed, six-minute walk distance, double support time, step length, and asymmetry metrics in the Health app on iPhone, tracked by Apple Watch
* Exercise and Stand goals can now be modified in addition to the Move goal
* Activity app renamed Fitness app on iPhone
* Maps
* Cycling Directions
* Cycling specific directions in Maps in supported areas
* Choose routes based on intensity and duration
* Alerts about upcoming stairs and dismount locations
* Handwashing (Series 4 or later only)
* Automatic handwashing detection with a 20-second timer
* Handwashing reminder when arriving home
* Siri
* Translation support for 10 languages
* Support for Announce Messages with Siri
* New Siri UI
* New Apps
* New Shortcuts app, and ability to choose visible shortcuts on Apple Watch from iPhone
* New Memoji app with support for editing and creating new Memoji (Series 4 or later only)
* Dictation
* Dictation is processed on-device (Series 4 or later only)
* Privacy
* Microphone icon appears onscreen when in use
* Headphones
* Ability to set a decibel volume limit for headphones
* Reminders to reduce volume if above World Health Organization's limits
* Family Setup (Cellular Series 4 or later only, in supported countries)
* Pair Apple Watches for family members that do not have their own iPhone, aimed at children and seniors
* Activity metrics are more accurate for children, and Apple Watch now measures move minutes rather than active calories
* Apple Cash Family allows children to receive money using Apple Cash
* Enhanced parental controls, including approved contacts and apps, and Schooltime
* Schooltime
* Displays a standard yellow watch face and turns on Do Not Disturb to limit distractions
* Can be manually enabled through the Control Centre, or scheduled and remotely enabled for child watches using Family Setup

Security notes

7.0.1  | iOS 14.0.1 | 18R395  | 2020  |

* Fixes an issue where some payment cards in Wallet were disabled for some users

No published security notes.[50]

7.0.2  |  | 18R402  | 2020  |

* Fixes an issue where the battery drained too quickly
* Fixes an issue that blocked access to the ECG app

No published security notes.[50]

7.0.3  |  | 18R410  | 2020  |

* Fixes an issue that causes unexpected restarts with Series 3 watches

No published security notes.[50]

7.1  | iOS 14.2 | 18R590  | 2020  |

* Headphone audio level notifications
* Adds ECG and irregular heart rhythm notifications support in South Korea and Russia
* Fixed: Unlocking Mac with Apple Watch fails
* Fixed: Always-on display failure on Apple Watch Series 6

Security notes

7.2  |  | 18S564  | 2020  |

* Adds support for Apple Fitness+ (Australia, Canada, Ireland, New Zealand, UK, and US only)
* Cardio fitness notifications
* AFiB notifications now available at heart rates above 100 BPM
* Adds ECG support in Taiwan
* Adds braille displays with VoiceOver support
* Family Setup now available in Bahrain, Canada, Norway, and Spain

Security notes

7.3  |  | 18S801  | 2021  |

* New Unity watch face
* New Time to Walk podcasts in Apple Fitness+
* Add ECG support in Japan, Mayotte, Philippines, Taiwan, and Thailand (Series 4 or later)
* Add Irregular heart rhythm notifications in Japan, Mayotte, Philippines, Taiwan, and Thailand
* Fix an unresponsive issue when zoom is enabled in the Control Center and Notification Center

Security notes

7.3.1  |  | 18S811  | 2021  |

* Fix for a charging issue when in Power Reserve mode (Series 5 and SE only)

No published security notes.[50]

7.3.2  |  | 18S821  | 2021  |

* Important security updates

Security notes

7.3.3  |  | 18S830  | 2021  |

* Important security updates

Security notes

7.4  | iOS 14.5  | 18T195  | 2021  |

* Unlock iPhone with Face ID using Apple Watch when wearing a face mask
* Set the Bluetooth device type in Settings
* Airplay audio and video content of Apple Fitness+ workouts
* Add ECG support on in Australia and Vietnam (Series 4 or later)
* Add irregular heart rhythm notifications in Australia and Vietnam

Security notes

7.4.1  | iOS 14.5.1  | 18T201  | 2021  |

* Important security updates

Security notes

7.5  | iOS 14.6  | 18T567  | 2021  |

* Subscription content in Podcasts app
* Apple Card with a Family Sharing
* Add ECG support in Malaysia and Peru (Series 4 or later)
* Add irregular heart rhythm notifications in Malaysia and Peru

Security notes

7.6  | iOS 14.7  | 18U63  | 2021  |

* Add ECG support for multiple countries (Series 4 or later)
* Add irregular heart rhythm notifications for multiple countries

Security notes

7.6.1  | iOS 14.7.1  | 18U70  | 2021  |

* Important security updates

Security notes

7.6.2  | iOS 14.8  | 18U80  | 2021  |

* This release fixes FORCEDENTRY (CVE-2021-30860), an integer overflow bug that allows a malicious PDF to perform remote code execution.[56]

Security notes

### watchOS 8

Apple announced watchOS 8 at the 2021 Worldwide Developers Conference on June 7, 2021. Apple Watch models supporting watchOS 7 can also support watchOS 8. However, like watchOS 7, watchOS 8 has limited support on Apple Watch Series 3. It is also the last version of watchOS to be supported on Apple Watch models with 32-bit processors.

Overview of watchOS 8 versions[57]

watchOS version  | iOS version based on  | Build  | Release date | Features
8.0  | 15.0  | 19R343

19R346

| 2021  | Initial release on Apple Watch Series 7. Build 13R346 is pre-installed only on Apple Watch Series 7 (GPS + Cellular).

* Watch Faces
* New Portrait photo and World Time watch face (Series 4 and later)

* Home
* View the status and accessory controls at the top
* Accessories and scenes displayed changes depending on the time of day and usage
* View all HomeKit camera feeds together
* New Favorites section

* Wallet
* Added support for home, hotel, and office keys
* Added support for car keys (Series 6 and later)
* Added support for Remote keyless car features

* Workout
* New tai chi and pilates workouts
* Automatic workout detection for outdoor cycling
* Outdoor cycling workout tracking improvements
* Hiking workout tracking improvements (aged 13 and below)
* Voice feedback during workout

* Fitness+
* New guided meditations sessions
* New pilates workouts
* New picture-in-picture support
* New search filters

* Mindfulness
* Breathe session improvements
* New reflect session

* Sleep
* Monitor respiratory rate when sleeping
* View respiratory rate data recorded in Health app

* Messages
* Use the Scribble, dictation, and emoji methods simultaneously
* Use Digital Crown to scroll when editing dictated text
* Enter hashtag to search for GIF images

* Photos
* New Photos app
* Share photos

* Find My
* New Find Items app
* New Find Devices app

* Weather
* Support for precipitation and severe weather notifications alerts
* New precipitation graph

* Miscellaneous
* Focus function added
* Sync Focus state with iOS, iPadOS or macOS
* New Contacts app
* New Tips app
* Redesigned Music app
* Share songs, albums, and playlists
* Run simultaneous timers at the same time
* Cycle Tracking improvements
* New Memoji stickers and outfits
* Measure headphone audio level in Control Center
* Transit card support in Wallet for Family Setup users in multiple countries
* Google account support in Calendar and Mail for Family Setup users
* New AssistiveTouch gestures supported
* Add ECG support in Lithuania (Series 4 or later)
* Add irregular heart rhythm notifications in Lithuania

Security notes

8.0.1  | 15.0.2  | 19R354  | 2021  |

* Software update progress bar fix (Series 3 only)
* Fix a bug with Accessibility settings (Series 3 only)

No published security notes.[50]

8.1  | 15.1  | 19R570  | 2021  |

* Fall detection improvements and new settings (Series 4 and later)
* Support COVID-19 vaccination cards in Apple Wallet
* Fitness+ SharePlay support
* Improve Always-On time accuracy (Series 5 and later)

Security notes

8.1.1  |  | 19R580  | 2021  | Apple Watch Series 7 (GPS + Cellular) only

* Charging issue fix

No published security notes.[50]

8.3  | 15.2  | 19S55  | 2021  |

* Enable ECG for China (Series 4 or later)
* Compass no longer shows altitude (Series 3-5) latitude and longitude in mainland China[58]
* New Apple Music Voice plan option
* New App Privacy Report
* Fix for notifications not being muted during Mindfulness sessions

Security notes

8.4  | 15.3  | 19S546  | 2022  |

* Important security updates
* Charging fix for select chargers

Security notes

8.4.1  |  | 19S550  | 2022  | Apple Watch Series 4 or later only

* Bug fixes

No published security notes.[50]

8.4.2  | 15.3.1  | 19S553  | 2022  |

* Important security updates
* Bug fixes

No published security notes.[50]

8.5  | 15.4  | 19T242  | 2022  |

* Authenticate Apple TV purchases and subscriptions
* Support for EU COVID-19 vaccination cards in Apple Wallet
* Afib tracking improvements for irregular rhythm notifications in multiple countries
* New audio description in Fitness+

Security notes

8.5.1  | 15.4.1  | 19T252  | 2022  |

* Important security updates
* Bug fixes

No published security notes.[50]

8.6  | 15.5  | 19T572  | 2022  |

* Add ECG support in Mexico (Series 4 or later)
* Add irregular heart rhythm notifications in Mexico

Security notes

8.7  | 15.6  | 19U66  | 2022  |

* Important security updates
* Bug fixes

Security notes

8.7.1  | 15.6.1  | 19U67  | 2022  | Apple Watch Series 3 only

* Restart issue fix

No published security notes.[50]

Post-watchOS 9 update for Series 3 and/or watches paired with an iOS 15.x iPhone (to support iPhone 6S, 6S Plus, SE (1st gen), 7 and 7 Plus)
8.8.1  | 15.7.7  | 19U512  | 2023  | Security notes
8.8.2  | 15.8.7  | 19U526  | March 24, 2026 | Final version to support the Apple Watch Series 3, iPhone 6S, 6S Plus, SE (1st gen), 7, and 7 Plus

* Extends device certificate required by iMessage, FaceTime, and device activation to continue working past January 2027

### watchOS 9

Apple announced watchOS 9 at the 2022 Worldwide Developers Conference on June 6, 2022. With this release, Apple dropped support for the Apple Watch Series 3, which was the last Apple Watch model with a 32-bit processor, making watchOS 9 the first version of watchOS to run exclusively on Apple Watch models with 64-bit processors.

Overview of watchOS 9 versions[59]

watchOS version  | iOS version based on  | Build  | Release date | Features
9.0  | 16.0  | 20R361  | 2022  | Initial release on Apple Watch Series 8, Apple Watch SE (2nd gen) and Apple Watch Ultra

Drops support for the Apple Watch Series 3, iPhone 6S, 6S Plus, SE (1st gen), 7 and 7 Plus

* Watch Faces
* New Astronomy, Lunar, Playtime, Metropolitan, and Nike watch faces
* Complication improvements
* Portrait photo watch face improvements
* Change watch face depending on Focus

* Workout
* Access workout view during a workout
* New heart rate zone, elevation view, and running power graphs
* Additional running metrics (SE, Series 6 and later)
* New custom and Multisport workout option
* New workout alerts
* Pool Swim workout improvements
* New swimming metrics

* Fitness+
* New trainer guidance and personal fitness metrics displayed

* Compass
* New Compass app (SE, Series 5 and later)
* New compass waypoints, and backtrack GPS function (SE, Series 6 and later)

* Sleep
* Sleep tracking improvements
* New comparisons chart

* Medications
* Add and schedule medications
* View medication schedule
* Medication reminders
* New watch complication

* AFib History
* New weekly summary notifications
* AFib tracking improvements
* Export data as a PDF

* Family Setup
* New Podcasts app
* New support for Yahoo and Outlook emails

* Accessibility
* New AssistiveTouch actions
* Ability to pair a Bluetooth keyboard
* Airplay Apple Watch to iPhone

* Miscellaneous
* New Low Power Mode
* International roaming support (SE, Series 5 and later)
* New keyboard languages (Series 7 and later)
* New Communication safety setting in Screen Time
* New cycle deviation notifications alerts
* New cardio recovery metrics
* Reminders, Calendar, and Podcast app improvements
* Minor Dock enhancements
* New notification banner design when in use

Security notes

9.0.1  |  | 20R8380  | 2022  | Apple Watch Ultra only

* Fixes an issue with audio on phone calls on the Apple Watch Ultra

No published security notes.[50]

9.0.2  |  | 20R8383  | 2022  |

* Fixes an issue causing interruptions with Spotify
* Fixes an issue with snooze alarm notifications continuing after deleting the alarm
* Fixes syncing of Wallet and Fitness data for newly-paired watch
* Fixes an issue with audio interruptions on Series 8 and Ultra

No published security notes.[50]

9.1  | 16.1  | 20S75  | 2022  |

* Option to extend battery life during select workouts by reducing heart rate and GPS reading frequency (Series 8, SE 2nd generation, and Ultra)
* Download music while on battery via Wi-Fi or cellular
* Add support for Matter
* Fixes incorrect voice feedback of average pace for the Outdoor Run workout
* Fixes an issue where the chance of rain probability shown in Weather app may be different from iPhone
* Fixes an issue with the hourly weather complication showing AM for PM hours
* Fixes an issue with time duration getting stuck during Strength Training Workout
* Fixes an issue where VoiceOver fails to announce the app name when multiple notifications are received

Security notes

9.2  | 16.2  | 20S361  | 2022  | Security notes
9.3  | 16.3  | 20S648  | 2023  | Security notes
9.3.1  | 16.3.1  | 20S664  | 2023  |
9.4  | 16.4  | 20T253  | 2023  |

* Wake-up alarms are no longer silenced with cover to mute gesture to avoid accidental cancellations during sleep
* Cycle Tracking with retrospective ovulation estimates and cycle deviation alerts now supported in Moldova and Ukraine
* AFib History now available in Colombia, Malaysia, Moldova, Thailand, and Ukraine

Security notes

9.5  | 16.5  | 20T562  | 2023  |

* Add Pride Celebration watch face to honor the LGBTQ+ community and culture

Security notes

9.5.1  |  | 20T570  | 2023  |
9.5.2  |  | 20T571  | 2023  |

Security notes

9.6  | 16.6  | 20U73  | 2023  |
9.6.1  |  | 20U80  | 2023  |
9.6.2  | 16.6.1  | 20U90  | 2023  | Security notes
Post-watchOS 10 update for watches paired with an iOS 16.x iPhone (to support phones that iOS 17 does not support like iPhone 8, iPhone 8 Plus, iPhone X)
9.6.3  |  | 20U502  | 2023  | Security notes
9.6.4  | 16.7.14  | 20U512  | 2026  | Final version to support iPhone 8, 8 Plus and X

* Extends device certificate required by iMessage, FaceTime, and device activation to continue working past January 2027

### watchOS 10

Apple announced watchOS 10 at the 2023 Worldwide Developers Conference on June 5, 2023. With this release, Apple dropped support for iPhone 8, 8 Plus and X. All Apple Watch models supporting watchOS 9 also support watchOS 10.[60]

Overview of watchOS 10 versions[61]

watchOS version  | iOS version based on  | Build  | Release date | Features
10.0  | 17.0  | 21R356  | 2023  | Initial release on Apple Watch Series 9 and Apple Watch Ultra 2

* New Watch Faces: Snoopy, Palette, Nike Globe, and Solar Analog
* Optimized Charge Limit is now available on Apple Watch SE, Series 6, Series 7, and Series 8.
* Fixed: Apple Watch Series 6 (40mm) estimates maximum battery capacity more accurately.
* New and updated ways to use Apple Watch

10.0.1  | 17.0.1  | 21R360  | 2023  |

* Bug fixes

10.0.2  | 17.0.2  | 21R371  | 2023  | Ultra 2 and Series 9 only

* Bug fixes that are specific to the Ultra 2 and Series 9

10.1  | 17.1  | 21S67  | 2023  |

* Double Tap gesture (select models)
* NameDrop (select models)
* Bug fixes

10.1.1  | 17.1.1  | 21S71  | 2023  |

* Battery drain fixes

10.2  | 17.2  | 21S364[62] | 2023  |
10.3  | 17.3  | 21S644  | 2024  |

* New Watch Faces: Unity Bloom

10.3.1  | 17.3.1  | 21S651  | 2024  |
10.4  | 17.4  | 21T216  | 2024  |
10.5  | 17.5  | 21T575  | 2024  |

* New Watch Faces: Pride Radiance
* Bug fixes

10.6  | 17.6  | 21U577  | 2024  |

* Bug fixes and security improvements

10.6.1  | 17.6.1  | 21U580  | 2024  |

* This update fixes an issue that may prevent access to Apple Fitness+

Post-watchOS 11 update for Series 4, Series 5, SE 1, and/or watches paired with an iOS 17.x iPhone (for users who deferred updating to iOS 18)
10.6.2  | 17.7.2  | 21U594  | 2026  | Final version to support the Apple Watch Series 4, Apple Watch Series 5 and Apple Watch SE (1st generation)

* Extends device certificate required by iMessage, FaceTime, and device activation to continue working past January 2027

### watchOS 11

Apple announced watchOS 11 at the 2024 Worldwide Developers Conference on June 10, 2024. With this release, Apple drops support for the Apple Watch Series 4, Apple Watch Series 5 and Apple Watch SE (1st generation).[63] This marks the first time 64-bit Apple Watch devices were dropped.

For legal reasons, blood oxygen monitoring was disabled on Series 9 and Ultra 2 Apple Watches sold in the United States after January 18, 2024.[64] Apple Watch Series 10 was also incapable of blood oxygen monitoring at release.[65] On August 14, 2025, Apple reintroduced blood oxygen monitoring for affected Series 9, Series 10, and Ultra 2 Apple Watches with watchOS 11.6.1.[66]

colspan="5" Overview of watchOS 11 versions[67]

watchOS version  | iOS version based on  | Build  | Release date | Features
11.0  | 18.0  | 22R349  | 2024  | Initial release on Apple Watch Series 10

Drops support for the Apple Watch Series 4, Apple Watch Series 5 and Apple Watch SE (1st generation).

11.0.1  | 18.0.1  | 22R361  | 2024  |
11.1  | 18.1  | 22R585  | 2024  |
11.2  | 18.2  | 22S101  | 2024  |
11.3  | 18.3  | 22S555  | 2025  |

* Bug fixes

11.3.1  | 18.3.1  | 22S560  | 2025  |

* Bug fixes

11.4  | 18.4  | 22T251  | 2025  |
11.5  | 18.5  | 22T572  | 2025  |
11.6  | 18.6  | 22U84  | 2025  |

* Bug fixes

11.6.1  | 18.6.1  | 22U90  | 2025  |
Post-watchOS 26 update for watches paired with an iOS 18.x iPhone (to support iPhone XS, XS Max, and XR)
11.6.2  | 18.6.2  |  | 2026  | Final version to support the iPhone XS, XS Max, and XR

* Fixed an issue with connecting to emergency services in Australia[68]

### watchOS 26

Apple announced watchOS 26 at the 2025 Worldwide Developers Conference on June 9, 2025. watchOS 26 was released on September 15, 2025. All devices that supported watchOS 11 support watchOS 26.

Apple advanced the version number to 26 as part of a shift to a year-based versioning convention across its operating systems.

colspan="4" Overview of watchOS 26 versions[69]

Version  | Build  | Release date | Features
26.0  | 23R352  | 2025  | Initial release on Apple Watch Series 11, Apple Watch SE (3rd generation), and Apple Watch Ultra 3

Drops support for iPhone XS, XS Max, and XR

* New Watch faces: Exactograph, Flow, Waypoint, Hermès Faubourg Party, alongside enhancements to Photos face and a redesigned watch face gallery.
* New unified Liquid Glass design language, which is used across Apple platforms
* Hypertension Notifications for (Series 9, Ultra 2 or later)
* Sleep Score
* Workout Buddy (requires Apple Intelligence-capable iPhone)
* Improved prediction algorithm for Smart Stack
* Configurable widgets in Smart Stack
* Live Translation for Messages (Series 9. Ultra 2 or later with Apple Inteligence-capable iPhone)
* Smart Actions and more precise Smart Replies in Messages
* Redesigned Workout app with intelligent media controls, now allowing Apple Music to select the best workout playlist
* New Notes app
* Wrist Flick gesture (Series 9, Ultra 2 or later)
* Several watch faces and applications like Stopwatch and Timer get 1Hz support that shows seconds ticking in always-on mode (Series 10 or later)
* Automatic adjustment of volume of notifications, calls, timers, alarms, and Siri based on the enviroment
* Hold Assist and Call Screening when iPhone is nearby

Security notes

26.0.1  | 23R8352  | 2025  | Ultra 3 only

* Enables Messages and Find My via satellite in Mexico[70]

No security notes

26.0.2  | 23R362  | 2025  |

* Bug fixes

No security notes

26.1  | 23S37  | 2025  | Security notes
26.2  | 23S303  | 2025  |

* Sleep Score notification controls and classification refinements
* Enhanced Safety Alerts in the United States
* Fixes bug in Music app where songs do not advance

Security notes

26.2.1  | 23S314  | 2026  |

* Adds support for AirTag 2

No security notes

26.3  | 23S620  | 2026  | Security notes
26.4  | 23T240  | 2026  |

* Adds support for AirPods Max 2
* Workout type icon in Workout app
* New emoji based on Unicode 17.0

Security notes

26.5 beta 1  | 23T5441h  | 2026  |
{{{2}}}

## Hardware support

Supported watchOS versions on the Apple Watch  Model  | watchOS

|

1  | 2  | 3  | 4  | 5  | 6  | 7  | 8  | 9  | 10  | 11  | 26
1st  |  |  |  |  |  |  |  |  |  |  |  |
Series 1  | N/A  | N/A  |  |  |  |  |  |  |  |  |  |
Series 2  | N/A  | N/A  |  |  |  |  |  |  |  |  |  |
Series 3  | N/A  | N/A  | N/A  |  |  |  |  |  |  |  |  |
Series 4  | N/A  | N/A  | N/A  | N/A  |  |  |  |  |  |  |  |
Series 5  | N/A  | N/A  | N/A  | N/A  | N/A  |  |  |  |  |  |  |
SE (1st)  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |  |  |  |  |  |
Series 6  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |  |  |  |  |  |
Series 7  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |  |  |  |  |
Series 8  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |  |  |  |
Ultra (1st)  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |  |  |  |
SE (2nd)  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |  |  |  |
Series 9  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |  |  |
Ultra 2  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |  |  |
Series 10  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |  |
SE 3  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |
Series 11  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |
Ultra 3  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |

## References

1. ↑ Clover, Juli (January 22, 2024). "Apple Releases watchOS 10.3 With New Watch Face". https://www.macrumors.com/2024/01/22/apple-releases-watchos-10-3/.
2. ↑ "How to change the language on an Apple Watch, and make it differ from the language on your paired iPhone". Business Insider. October 8, 2019. https://www.businessinsider.com/how-to-change-language-on-apple-watch. "Your Apple Watch is designed to "mirror" the language used on your iPhone, so by default it'll use whichever language is set on that device, but you can make the two devices differ."
3. ↑ "Apple – iPhone XS – Technical Specifications". Apple. https://www.apple.com/iphone-xs/specs/.
4. ↑ 4.0 4.1 "Apple Watch runs 'most' of iOS 8.2, may use A5-equivalent processor". AppleInsider. April 23, 2015. http://appleinsider.com/articles/15/04/23/apple-watch-runs-most-of-ios-82-may-use-a5-equivalent-processor.
5. ↑ "Apple announces watchOS 2 with third-party Apple Watch apps, new Timepieces, video playback, much more". 9to5Mac. June 8, 2015. http://9to5mac.com/2015/06/08/apple-announces-new-version-of-watchos.
6. ↑ "watchOS 2 final version released for Apple Watch users". September 21, 2015. http://www.ithinkdiff.com/download-watchos-2-final-version-apple-watch.
7. ↑ "Apple's watch OS 2 is now live following bug delay". 21 September 2015. http://www.cnet.com/news/apples-watch-os-2-is-now-live-following-bug-delay.
8. ↑ "Apple Launches watchOS 5 With Walkie-Talkie, Apple Podcasts, Siri Shortcuts, New Watch Faces, Raise to Speak and More". September 17, 2018. https://www.macrumors.com/2018/09/17/apple-releases-watchos-5/.
9. ↑ "watchOS 5 adds powerful activity and communications features to Apple Watch". Apple Newsroom (Press release). Archived from the original on April 14, 2022. Retrieved June 5, 2018.
10. ↑ "Apple Releases watchOS 6 With Dedicated App Store, New Watch Faces, Noise Monitoring App and More". September 19, 2019. https://www.macrumors.com/2019/09/19/apple-releases-watchos-6/.
11. ↑ "watchOS 7 adds significant personalization, health, and fitness features to Apple Watch" (Press release). Apple Inc. June 22, 2020. Archived from the original on February 17, 2021. Retrieved July 23, 2020.
12. ↑ Orellana, Vanessa Hand (July 21, 2020). "10 new tricks WatchOS 7 will soon bring to your Apple Watch". https://www.cnet.com/how-to/watchos-7-apple-watch-tricks-features-coming-soon-sleep-tracking-hand-washing/.
13. ↑ Summerbell, D.. "Apple will introduce new health features and a focus mode to WatchOS 8" (in en-US). https://www.wavband.com/apple-will-introduce-new-health-features-and-a-focus-mode-to-watchos-8/.
14. ↑ "How To Use and Organize Apple Watch Glances". April 27, 2015. http://www.iphonetricks.org/how-to-use-and-organize-apple-watch-glances.
15. ↑ "Apple Watch – Technology". Apple. https://www.apple.com/watch/technology.
16. ↑ "Apple Ending Support for Force Touch on Apple Watch With watchOS 7" (in en-US). June 24, 2020. https://www.iphoneincanada.ca/news/force-touch/.
17. ↑ Ng, Gary (8 June 2017). "Apple Watch Calculates VO2 Max in watchOS 4 Beta". iPhone in Canada. https://www.iphoneincanada.ca/watch/apple-watch-vo2-max/.
18. ↑ 18.0 18.1 Bonifacic, Igor (15 Sep 2020). "Apple adds blood oxygen monitoring to the Watch Series 6". Engadget. https://www.engadget.com/apple-watchos-7-blood-oxygen-172503257.html.
19. ↑ Hand Orellana, Vanessa (8 Sep 2020). "WatchOS 7: Apple Watch will soon be able to measure your fitness level as you age". CNET. https://www.cnet.com/news/watchos-7-new-metrics-mobility-aging-fitness-level-apple-watch-this-fall/.
20. ↑ Comstock, Jonah (15 Sep 2020). "Apple adds SpO2 & V02 Max to Apple Watch Series 6, and launches three new studies". mobiHealthNews. https://www.mobihealthnews.com/news/apple-adds-spo2-v02-max-apple-watch-series-6-launches-three-new-studies.
21. ↑ Hand Orellana, Vanessa (23 Jul 2019). "Apple Watch ECG vs. hospital EKG: Not the results I was expecting". CNET. https://www.cnet.com/news/apple-watch-ecg-ekg-watchos-vs-hospital-medical-grade-detected-strange-heart-rhythm/.
22. ↑ Mitroff, Sarah (19 Sep 2019). "Apple WatchOS 6: How to track your menstrual cycle and fertility". CNET. https://www.cnet.com/health/apple-watchos-6-cycle-tracking/.
23. ↑ Stein, Scott (14 Aug 2020). "Apple WatchOS 7 sleep tracking: What it can and can't do". CNET. https://www.cnet.com/health/apple-watchos-7-sleep-tracking-what-it-can-and-cant-do/.
24. ↑ "watchOS 7 adds significant personalization, health, and fitness features to Apple Watch". Apple. Inc.. 22 June 2020. https://www.apple.com/newsroom/2020/06/watchos-7-adds-significant-personalization-health-and-fitness-features-to-apple-watch/.
25. ↑ "Track your nightly wrist temperature changes with Apple Watch - Apple Support (KW)" (in en). https://support.apple.com/en-kw/102674.
26. ↑ "Sleep apnea notifications on your Apple Watch - Apple Support (KW)" (in en). https://support.apple.com/en-kw/120031.
27. ↑ "Apple Is Going After The Health Care Industry, Starting With Personal Health Data" (in en-US). CB Insights Research. September 20, 2017. https://www.cbinsights.com/research/apple-health-care-strategy-apps-expert-research/.
28. ↑ 28.0 28.1 Phelan, David. "Apple Watch Secrets Revealed By Jony Ive, Health A Big Focus" (in en). Forbes. https://www.forbes.com/sites/davidphelan/2018/05/10/apple-watch-origins-revealed-health-always-a-significant-focus/#5e6952b05b35.
29. ↑ "Apple Watch's heart rate sensor can detect diabetes, Cardiogram study finds" (in en). Macworld. https://www.macworld.com/article/3253341/software-health/cardiogram-diabetes-apple-watch.html.
30. ↑ Ballinger, Brandon; Hsieh, Johnson; Singh, Avesh; Sohoni, Nimit; Wang, Jack; Tison, Geoffrey H.; Marcus, Gregory M.; Sanchez, Jose M. et al. (2018). "DeepHeart: Semi-Supervised Sequence Learning for Cardiovascular Risk Prediction". 32. pp. 2079–2080. doi:10.1609/aaai.v32i1.11891. https://ojs.aaai.org/index.php/AAAI/article/view/11891. Retrieved May 22, 2020.
31. ↑ 31.0 31.1 31.2 "Apple Watch Firmware". https://ipsw.me/watch.
32. ↑ "Apple Watch Timekeeping". https://www.apple.com/watch/timekeeping.
33. ↑ "Apple Watch Built-in Apps". https://www.apple.com/watch/built-in-apps.
34. ↑ "watchOS 1.01 information". Apple Inc.. https://support.apple.com/kb/DL1812.
35. ↑ "About the security content of watch OS 1.0.1 – Apple Support". Apple. https://support.apple.com/HT204870.
36. ↑ "Download watchOS 2.0 – 2.2.2 Information". https://support.apple.com/kb/DL1840?locale=en_US.
37. ↑ 37.0 37.1 37.2 37.3 37.4 37.5 "watchOS 2.x information". Apple Inc.. https://support.apple.com/kb/DL1840.
38. ↑ "Download watchOS 3.0 – 3.2.3 Information". https://support.apple.com/kb/DL1894?locale=en_US.
39. ↑ Miller, Chance (December 14, 2016). "Apple has temporarily pulled the watchOS 3.1.1 update due to reports of it bricking devices". 9to5Mac. https://9to5mac.com/2016/12/13/apple-pulls-watchos-3-1-1-due-to-bricking/.
40. ↑ "About watchOS 4 Updates" (in en). https://support.apple.com/en-us/HT208071.
41. ↑ "Apple Watch Series 4 starts at $399, packs larger displays and EKG sensor". September 12, 2018. https://www.cnet.com/news/apple-watch-4-rumors-launch-features-leaks-specs-price-release-date-reports-bigger-display/.
42. ↑ "About watchOS 5 Updates" (in en). https://support.apple.com/en-us/HT209085.
43. ↑ Kelion, Leo (October 31, 2018). "Apple Watch owners asked to return devices for repair after update glitch". BBC News. https://www.bbc.co.uk/news/technology-46045414.
44. ↑ "Apple's Walkie-Talkie Apple Watch App Works Again Following iOS 12.4 and watchOS 5.3 Release". July 22, 2019. https://www.macrumors.com/2019/07/22/apple-walkie-talkie-app-bug-fix/.
45. ↑ "About the security content of watchOS 5.3.2". Apple Inc.. https://support.apple.com/en-us/HT210588.
46. ↑ "watchOS 5.3.4 (16U627) - Releases - Apple Developer". Apple Inc.. December 10, 2019. https://developer.apple.com/news/releases/?id=12102019a.
47. ↑ "About the security content of watchOS 5.3.4". Apple Inc.. https://support.apple.com/en-us/HT210791.
48. ↑ "watchOS 5.3.5 (16U652) - Releases - Apple Developer". Apple Inc.. February 18, 2020. https://developer.apple.com/news/releases/?id=02182020a.
49. ↑ Clover, Juli (February 18, 2020). "Apple Releases watchOS 6.1.3 Update With Heart Rhythm Notification Bug Fix". https://www.macrumors.com/2020/02/18/apple-releases-watchos-6-1-3/.
50. ↑ 50.00 50.01 50.02 50.03 50.04 50.05 50.06 50.07 50.08 50.09 50.10 50.11 50.12 50.13 50.14 50.15 50.16 "Apple security updates" (in en). https://support.apple.com/en-us/HT201222.
51. ↑ Heather Kelly (June 3, 2019). "Everything Apple announced at WWDC, from Apple sign-in to dark mode". https://www.cnn.com/2019/06/03/tech/wwdc-2019-apple-keynote/index.html.
52. ↑ "watchOS 6 advances health and fitness capabilities for Apple Watch" (Press release). Apple Inc. Archived from the original on May 14, 2021. Retrieved June 6, 2019.
53. ↑ "watchOS 6". Apple Inc.. https://www.apple.com/watchos/watchos-6/.
54. ↑ "About watchOS 6 Updates" (in en). https://support.apple.com/en-us/HT210583.
55. ↑ "About watchOS 7 Updates" (in en). September 14, 2021. https://support.apple.com/en-us/HT211815.
56. ↑ Marczak, Bill; Scott-Railton, John; Razzak, Bahr Abdul; Al-Jizawi, Noura; Anstis, Siena; Berdan, Kristin; Deibert, Ron (September 13, 2021). FORCEDENTRY: NSO Group iMessage Zero-Click Exploit Captured in the Wild. https://citizenlab.ca/2021/09/forcedentry-nso-group-imessage-zero-click-exploit-captured-in-the-wild/. Retrieved September 16, 2021.
57. ↑ "About watchOS 8 Updates" (in en). https://support.apple.com/en-us/HT212790.
58. ↑ Shen, Xinmei (December 15, 2021). "Apple blocks mainland Chinese users from seeing some geographic information on its Compass app". https://www.scmp.com/tech/big-tech/article/3159830/apple-blocks-mainland-users-seeing-some-geographic-information-its.
59. ↑ "About watchOS 9 Updates" (in en). https://support.apple.com/en-us/HT213436.
60. ↑ "watchOS 10" (in en-US). https://www.apple.com/watchos/watchos-10/.
61. ↑ "About watchOS 10 Updates" (in en). https://support.apple.com/HT213782.
62. ↑ "watchOS 10.2 (21S364) - Releases - Apple Developer". Apple Inc.. December 11, 2021. https://developer.apple.com/news/releases/?id=12112023d.
63. ↑ "watchOS 11 Preview" (in en-US). https://www.apple.com/watchos/watchos-preview/.
64. ↑ Peters, Jay (17 Jan 2024). "Apple Watches without banned blood oxygen features are now on sale". https://www.theverge.com/2024/1/17/24042395/apple-watch-ultra-2-series-9-ban-blood-oxygen-stores.
65. ↑ Kamel, Heirul (12 September 2024). "Apple Watch Series 10 Gets Blood Oxygen Monitoring Everywhere But The US". https://www.lowyat.net/2024/332146/apple-watch-series-10-blood-oxygen-us/.
66. ↑ "An update on Blood Oxygen for Apple Watch in the U.S.". https://www.apple.com/newsroom/2025/08/an-update-on-blood-oxygen-for-apple-watch-in-the-us/.
67. ↑ "About watchOS 11 Updates". August 14, 2025. https://support.apple.com/en-us/121163.
68. ↑ Mendes, Marcus (5 February 2026). "Apple rolls out watchOS 11.6.2 with cellular network bug fixes". https://9to5mac.com/2026/02/05/apple-rolls-out-watchos-11-6-2-with-cellular-network-bug-fixes/.
69. ↑ "About watchOS 26 Updates". January 26, 2026. https://support.apple.com/en-us/123002.
70. ↑ Mendes, Marcus (2025-09-19). "Apple releases watchOS 26.0.1, but very few users will get it" (in en-US). https://9to5mac.com/2025/09/19/apple-releases-watchos-26-0-1-but-very-few-users-will-get-it/.

## External links

* watchOS – official site
* Apple security content – for details about watchOS security updates
* About watchOS 9 Updates – Apple's official watchOS 9 release notes

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* Beats 1
* Connect
* Beats Music
* iTunes Festival/Apple Music Festival
* iTunes Radio
* News
* +
* Newsstand
* Podcasts
* TV
* +
* List of programs
* Channels

Stores|

* App stores
* iOS
* iMessage
* iPadOS
* watchOS
* macOS
* tvOS
* Apple Store
* iBooks Store
* iTunes Store
* iTunes Connect
* iTunes U

Support|

* AppleCare
* Apple Specialist
* Certifications
* Genius Bar
* JointVenture
* ProCare
* One to One

Companies|

| Subsidiaries|

* Anobit
* Apple Energy
* Apple IMC
* Apple Sales International
* Apple Services
* Apple Worldwide Video
* Beats Electronics
* Beddit
* Braeburn Capital
* Claris

|

Acquisitions|

* List
* Anobit
* AuthenTec Inc.
* Beats Electronics
* Beddit
* Cue
* Emagic
* FingerWorks
* Intrinsity
* InVisage Technologies
* Lala
* NeXT
* Nothing Real
* Metaio
* P.A. Semi
* PrimeSense
* Shazam
* Siri
* Spotsetter
* Texture
* Topsy
* EditGrid

Partnerships|

* AIM alliance
* Kaleida Labs
* Taligent
* Akamai
* Arm Holdings
* DiDi
* Digital Ocean
* iFund
* Imagination
* Rockstar Consortium

Related|

* Advertising
* 1984
* Think different
* Get a Mac
* iPods
* Product Red
* Campus
* Park
* University
* Design
* IDg
* Typography
* Book
* History
* Codenames
* Community
* Evangelist
* Fellow
* Master
* Criticism
* Litigation
* FBI–Apple encryption dispute
* iOS app approvals
* Artistic depictions of Steve Jobs

People|

| Executives|

| Current|

* Tim Cook (CEO)
* Jony Ive (CDO)
* Jeff Williams (COO)
* Luca Maestri (CFO)
* Katherine Adams (General Counsel)
* Eddy Cue
* Craig Federighi
* Isabel Ge Mahe
* John Giannandrea
* Lisa Jackson
* Sabih Khan
* Tor Myhren
* Deirdre O'Brien
* Adrian Perica
* Dan Riccio
* Phil Schiller
* Johny Srouji

|

Former|

* Michael Scott (CEO)
* Mike Markkula (CEO)
* John Sculley (CEO)
* Michael Spindler (CEO)
* Gil Amelio (CEO)
* Steve Jobs (CEO)
* Angela Ahrendts
* Fred D. Anderson
* John Browett
* Guerrino De Luca
* Paul Deneve
* Al Eisenstat
* Tony Fadell
* Scott Forstall
* Ellen Hancock
* Nancy R. Heinen
* Ron Johnson
* David Nagel
* Peter Oppenheimer
* Mark Papermaster
* Jon Rubinstein
* Bertrand Serlet
* Bruce Sewell
* Sina Tamaddon
* Avie Tevanian
* Ronald Wayne
* Steve Wozniak

Board of
directors|

| Current|

* Arthur D. Levinson (Chairman)
* Tim Cook (CEO)
* James A. Bell
* Albert Gore Jr.
* Andrea Jung
* Ronald D. Sugar
* Susan L. Wagner

|

Former|

* Mike Markkula (Chairman)
* John Sculley (Chairman)
* Steve Jobs (Chairman)
* Gil Amelio
* Fred D. Anderson
* Bill Campbell
* Mickey Drexler
* Al Eisenstat
* Larry Ellison
* Robert A. Iger
* Delano Lewis
* Arthur Rock
* Eric Schmidt
* Michael Scott
* Michael Spindler
* Edgar S. Woolard Jr.
* Jerry York

Founders|

* Steve Jobs
* Steve Wozniak
* Ronald Wayne

* Italics indicate discontinued products, services, or defunct companies.

*   * Category

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Original source: https://en.wikipedia.org/wiki/WatchOS. Read more

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