Size and Weight
Height: 49mm
Width: 44mm
Depth: 12mm
422 by 514 pixels
1245 sq mm display area
Weight (natural): 63.0 grams
Weight (black): 63.1 grams
Fits 130-210mm wrists
Controls
Customizable Action button
Digital Crown with haptic feedback
Side button
Single tap, double tap, and wrist flick gestures
Siri powered by Apple Intelligence
Chip
S11 chip with 64-bit dual-core processor
Audio Intelligence (Live Rewind, Siri Recap, Shazam, Sound Recognition)2
4-core Neural Engine
64GB capacity
Apple Intelligence and Siri AI
The next generation of Apple Intelligence is centered around you, integrated into your apps, and built with privacy. Apple Intelligence powers Siri AI - an entirely new version of Siri that's more personal, conversational, and powerful, along with helpful features across apps.
Sensors
Health Sensing System: third-generation electrical heart sensor, always-on optical heart sensor, blood oxygen sensor,3 temperature sensor4
Depth gauge
Water temperature sensor
Compass
Always-on altimeter
High-g accelerometer
High dynamic range gyroscope
Ambient light sensor
Health and Wellness
Readiness app
Vitals app with heart rate, respiratory rate, wrist temperature, sleep duration, and heart rate variability (HRV)5
Blood Oxygen app
ECG app
Heart Rate app
High and low heart rate notifications
Recovery HRV
High-frequency background heart rate tracking
Irregular rhythm notifications
Advanced Cycle Tracking app with fertile window estimates, retrospective ovulation estimates, and perimenopause and menopause support
Medications app
Mindfulness app with state of mind tracking
Noise app
Sleep app including sleep stages
Sleep score
Sleep apnea notifications
Hypertension notifications
Display
Always-On Retina display with wide-angle OLEDs and LTPO3
1Hz refresh
Active area 422 by 514 pixels, 326 pixels per inch
Flat sapphire crystal display
3000 nits peak brightness
1 nit minimum brightness
Night Mode for Apple Watch Ultra faces (Modular Ultra, Wayfinder, Orienteering)
Audio
Three-microphone array with beamforming and wind noise mitigation
Dual speakers
Media playback
Siren
Power and Battery Life
Multiday battery life, up to 50 hours of normal use
Up to 84 hours in Low Power Mode
Up to 18 hours outdoor workout
Up to 25 hours Extended Workout
Up to 45 hours Max Extended Workout
Built-in rechargeable lithium-ion battery
Fast-charge capable
Up to 80% charge in about 45 minutes
15 minutes for up to 18 hours of normal use
5 minutes for up to 10 hours of sleep tracking
Operating System
watchOS
watchOS is the world's most advanced wearable operating system, with apps and features designed to keep you active, healthy, safe, and connected.
Safety
Satellite communications (Emergency SOS, Messages, Find My)
Emergency SOS
International emergency calling
Siren
Flashlight
Fall Detection
Crash Detection
Last Emergency Call Availability Waypoint
Noise monitoring
Backtrack
Check In
Durability
Satellite communications (Emergency SOS, Messages, Find My)
Emergency SOS
International emergency calling
Siren
Flashlight
Fall Detection
Crash Detection
Last Emergency Call Availability Waypoint
Noise monitoring
Backtrack
Check In
Durability
Water resistance 100m (swim, snorkel, scuba, high-speed water sports) under ISO standard 22810:201021
Dust resistance IP6X under IEC 6052922
EN13319 recreational scuba diving to 40m ( 1m accuracy)
Tested to MIL-STD 810H against subsections for altitude, high temperature, low temperature, temperature shock, immersion, freeze with thaw, ice and freezing rain, and shock and vibration
Connectivity
All models
Support for 2.4GHz and 5GHz Wi-Fi networks
Wi-Fi 4 (802.11n)
Bluetooth 5.3
Precision dual-frequency GPS (GPS, Galileo, QZSS, and BeiDou)
Second-generation Ultra Wideband chip
Apple Pay
GymKit
Accessibility
Built-in accessibility features supporting vision, mobility, hearing, and cognitive disabilities.
Learn more
Features include:
VoiceOver
Zoom
On/Off Labels
Reduce Transparency
Increase Contrast
Color Filters
Text Size
Bold Text
Reduce Motion
Hourly Chimes
AssistiveTouch
Button Click Speed
Touch Accommodations
Auto-Answer Calls
Type to Siri
RTT Support
Audio Volume Balance
Audio Transcription
Live Speech
Accessibility Shortcut
Mono Audio
Taptic Time
Personal Voice
Live Listen
Sound Recognition
Environmental Requirements
On-wrist operating temperature:
-4 to 130 F (-20 to 55 C)
Operating temperature:
32 to 95 F (0 to 35 C)
Non-operating storage temperature:
-4 to 113 F (-20 to 45 C)
Dive operating temperature:
32 to 104 F (0 to 40 C)
Relative humidity:
5% to 90% noncondensing
Operating altitude:
-1600 feet to 29,500 feet (-500m to 9000m)
Compatibility
iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later
What's in the box
1 x Apple Watch Ultra 4
1 x Band
1 x Apple Watch Magnetic Fast Charger to USB-C Cable (1m)
