Material and Finish
Titanium case, Grade 5
Natural, Black
Size and Weight
Height: 49mm, Width: 44mm, Depth: 12mm
422 by 514 pixels, 1245 sq mm display area
Weight (natural): 61.6 grams, Weight (black): 61.8 grams
Fits 130–210mm wrists
Controls
Customizable Action button, Digital Crown with haptic feedback, Side button, Double tap and wrist flick gestures, Siri with on‑device processing
Chip
S10 chip with 64-bit dual-core processor
4-core Neural Engine
64GB capacity
Sensors
Electrical heart sensor, Third-generation optical heart sensor, Blood oxygen sensor, Temperature sensor, Depth gauge, Water temperature sensor, Compass, Always-on altimeter, High-g accelerometer, High dynamic range gyroscope, Ambient light sensor
Health and Wellness
Blood Oxygen app, ECG app, Cycle Tracking app with retrospective ovulation estimates, Heart Rate app, High and low heart rate notifications, Irregular rhythm notifications, 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
Up to 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 42 hours of normal use
Up to 72 hours in Low Power Mode
Built-in rechargeable lithium-ion battery
Fast-charge capable
Up to 80% charge in about 45 minutes
15 minutes for up to 12 hours of normal use
5 minutes for up to 8 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.
Workouts and Activity
Running, Hiking, Cycling, Swimming & Diving
Safety
Satellite connectivity (Emergency SOS, Messages, Find My)
Emergency SOS, International emergency calling, Siren, Flashlight, Crash Detection, Fall Detection, Last Emergency Call Availability Waypoint, Noise monitoring, Backtrack
Durability
Water resistance 100m (swim, snorkel, scuba, high-speed water sports) under ISO standard 22810:201015
Dust resistance IP6X under IEC 6052916
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
L1 and L5 precision dual-frequency GPS (GPS, GLONASS, Galileo, QZSS, and BeiDou)
Second-generation Ultra Wideband chip
Apple Pay, GymKit
Model A3281:
Supports RedCap for 5G19 and LTE
FDD‑5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n66, n71)
TDD‑5G NR (Bands n38, n40, n41, n53)
FDD‑LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 66, 71)
TDD‑LTE (Bands 38, 39, 40, 41, 53)
Support for Apple Watch For Your Kids
International roaming
Accessibility
Built-in accessibility features supporting vision, mobility, hearing, and cognitive disabilities.
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
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 26 or later
In the Box
Apple Watch Ultra 3
Band
