Apple Watch Ultra 3 Technical Specifications
Material and Finish
Titanium case, Grade 5
Natural, Black
Size and Weight
- Height: 49 mm
- Width: 44 mm
- Depth: 12 mm
- 422x514 pixels
- 1,245 mm² display area
- Weight (natural): 61.6 g
- Weight (black): 61.8 g
- Fits 130–210 mm wrists
Hardware and Buttons
- Microphone
- Speaker
- Customisable Action button
- Siren/Speaker
- Antennas (GPS, cellular)
- Microphone
- Side button
- Microphone
- Digital Crown
- Depth gauge / Water temperature sensor / Altimeter
Controls
- Customisable 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
-
Display
- Always‑On Retina display with wide‑angle OLEDs and LTPO3
- 1Hz refresh
- Active area (422x514 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
Multi-day 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
- Custom workouts
- Customisable Workout Views
- Training Load / Workout Effort Tracking
- Heart Rate Zones (customisable)
- Post-workout 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
-
- Compass with bearing, incline, elevation and coordinates
- Custom waypoints
- Automatically generated waypoints to cellular connectivity
- Backtrack GPS data
- Offline maps with custom route creation
- Elevation alerts
- Topographic maps for thousands of national and regional parks (US only)
- Hundreds of curated hikes across all
63 US national parks -
- Custom workouts
- Customisable 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 (customisable)
- Cadence (rpm), speed (mph), power (watts), power zones (with power meter connection)
-
- Custom workouts (pool swim) with haptics to cue the next interval
- Customisable 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 40 m
- Dive computer app (available on the App Store)
- Automatic launch at 1 m
- Current and maximum depth duration
- GPS entry and exit points
- Depth gauge
- Water temperature sensor
