Apple Watch Ultra 3
Technical Specifications
Titanium case, Grade 5
Natural, Black
Price
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
Hardware and Buttons
Microphone
Speaker
Customizable Action button
Siren/Speaker
Antennas (GPS, cellular/satellite)
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
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
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
Hiking
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 (U.S. only)
Hundreds of curated hikes across all 63 U.S. national parks
Siren
Cycling
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
Swimming
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
Diving
Recreational dive to 40m
Dive computer app (available on the App Store)
Automatic launch at 1m
Current and maximum depth duration
GPS entry and exit points
Depth gauge
Water temperature sensor
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 22810:2010
Dust resistance IP6X under IEC 60529
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
L1 and L5 precision dual-frequency GPS (GPS, GLONASS, Galileo, QZSS, and BeiDou)
Cellular: 5G and LTE
Wi-Fi 4 (802.11n)
Support for 2.4GHz and 5GHz Wi-Fi networks
Bluetooth 5.3
Second-generation Ultra Wideband chip
NFC: Apple Pay, GymKit
Support for Apple Watch For Your Kids
International roaming
Accessibility
Built-in accessibility features supporting vision, mobility, hearing, and cognitive disabilities.
Features include:
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
Apple Watch Magnetic Fast Charger to USB-C Cable (1m)
