Apple Watch Ultra 3 Technical Specifications
Material and Finish
Titanium case, Grade 5
Natural, Black
Size and Weight
- Height: 49mm
- Width: 44mm
- Depth: 12mm
- 422 by 514 pixels
- 1,245mm² display area
- Weight (natural): 61.6g
- Weight (black): 61.8g
- Fits 130–210mm wrists
Hardware and Buttons
- Microphone
- Speaker
- Customizable Action button
- Siren/Speaker
- Antennas (GPS, cellular)
- Microphone
- Side button
- Microphone
- Digital Crown
- Depth gauge / Water temperature sensor / Altimeter
Controls
- Customizable Action button
- Digital Crown with haptic feedback
- Side button
- Double tap and wrist flick gestures
Chip
- S10 chip with 64-bit dual-core processor
- 4-core Neural Engine
- 64GB capacity
Health and Wellness
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 3,000 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
Workouts and Activity
- Custom workouts
- Customizable Workout Views
- Training Load / Workout Effort Tracking
- Heart Rate Zones (customizable)
- Postworkout heart rate
- VO2 max
- Race Route
- Pacer
- Precision Start using Action button
- Stride Length, Ground Contact Time, Cadence, Power, and Vertical Oscillation
- Automatic track detection
- Multisport workout
- Compass with bearing, incline, elevation, and coordinates
- Custom waypoints
- Automatically generated waypoints to cellular connectivity
- Backtrack GPS data
- Offline maps
- Elevation alerts
- Topographic maps for thousands of national and regional parks (U.S. only)
- Hundreds of curated hikes across all 63 U.S. national parks
- Siren
- Custom workouts
- Customizable Workout Views
- Training Load / Workout Effort Tracking
- Average speed, elevation gained, and distance
- Bluetooth-compatible with power meters
- Functional Threshold Power (with power meter connection)
- Live Activity on iPhone
- Heart Rate Zones (customizable)
- Cadence (rpm), speed (mph), power (watts), power zones (with power meter connection)
- Postworkout heart rate
- Custom workouts (pool swim) with haptics to cue the next interval
- Customizable Workout Views (pool swim, open water swim)
- Splits and auto sets
- SWOLF score
- Automatic stroke and count detection (including kickboard)
- Water temperature
- Average pace, total distance, heart rate, and laps
- Recreational dive to 40m
- Dive computer app (available on the App Store)9
- Automatic launch at 1m
- Current and maximum depth duration
- GPS entry and exit points
- Depth gauge
- Water temperature sensor
More Workouts
Durability
- Water resistance 100m (swim, snorkel, scuba, high-speed water sports) under ISO standard 22810:201011
- Dust resistance IP6X under IEC 6052912
- 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
Accessibility
Built-in accessibility features supporting vision, mobility, hearing, and cognitive disabilities.
- 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
- Audio Volume Balance
- Audio Transcription
- Live Speech
- Accessibility Shortcut
- Mono Audio
- Taptic Time
- Personal Voice
- Live Listen
Environmental Requirements
On-wrist operating temperature:
–20° to 55° C
Operating temperature:
0° to 35° C
Non-operating storage temperature:
–20° to 45° C
Dive operating temperature:
0° to 40° C
Relative humidity:
5% to 90% noncondensing
Operating altitude:
–500m to 9,000m
