Apple Watch Ultra 3
Popular Topics
Top specifications
Heart rate sensor
Yes - electrical
Usage time
Standard: Up to 42 hours
Low Power Mode: Up to 72 hours
Low Power Mode: Up to 72 hours
Device warranty
24 months
Design
Interchangeable strap
Yes
Battery
Usage time
Standard: Up to 42 hours
Low Power Mode: Up to 72 hours
Low Power Mode: Up to 72 hours
Battery type
Lithium-ion
Charge time
45 minutes charge = 80% battery
15 minutes charge = up to 12 hours of normal use
5 minutes charge = up to 8 hours of sleep tracking
15 minutes charge = up to 12 hours of normal use
5 minutes charge = up to 8 hours of sleep tracking
Fast charge
Yes
Body
Weight (g)
Natural: 61.6
Black: 61.8
Black: 61.8
Dimensions (mm)
49x44x12 (HxWxD)
Water resistant
Yes - up to 100m
Dust resistant
Yes - IP6X
Processor
Neural Processing Unit (NPU)
4-core Neural Engine
Model
S10 chip with 64‑bit dual‑core processor
Connectivity
NFC enabled
Yes
Location services
GLONASS
Galileo
QZSS
BeiDou
Galileo
QZSS
BeiDou
Wi-Fi
Yes - 4
Bluetooth
Yes - 5.3
Network
VoLTE (4G calling in UK)
Yes
4G
Yes
5G
Yes
Display
Display type
Always-On Retina display
LTPO3 wide-angle OLED
LTPO3 wide-angle OLED
Screen size (inches)
1.98
Brightness
Up to 3000 nits
Pixels per inch
326
Screen resolution
422x514
Refresh rate
1Hz
Display modes
Night Mode
Sensors
Optical heart rate sensor
Yes - third-generation
Accelerometer
Yes - high-g
Blood pressure sensor
Yes
Temperature
Temperature sensor
Water temperature sensor
Water temperature sensor
Compass
Yes
Altimeter
Yes - always-on
Sleep tracking
Yes
Gyroscope
Yes - high dynamic range
Blood oxygen sensor
Yes
Menstrual tracker
Yes
3D depth sensor
Yes - depth gauge
Ambient light sensor
Yes
Heart rate sensor
Yes - electrical
Memory
Device memory
64GB
Features
Media player
Yes
Safety feature
Emergency SOS
International emergency calling
Siren
Torch
Crash Detection
Fall Detection
Last Emergency Call Availability Waypoint
Noise monitoring
Backtrack
Satellite connectivity (Emergency SOS, Find My)
International emergency calling
Siren
Torch
Crash Detection
Fall Detection
Last Emergency Call Availability Waypoint
Noise monitoring
Backtrack
Satellite connectivity (Emergency SOS, Find My)
Siri
Yes
Navigation
Yes
Apple Pay
Yes
Action button
Yes - customisable
Cable length (m)
1
GPS
Yes
eSIM compatibility
Yes
Gesture controls
Double tap
Wrist flick
Wrist flick
Special features
GymKit
Sleep Score
Hypertension notifications
Sleep apnoea notifications
Sleep Score
Hypertension notifications
Sleep apnoea notifications
Voice controls
Yes - Siri
Accessibility
Accessibility features
VoiceOver
Zoom
On/Off Labels
Reduce Transparency
Increase Contrast
Colour 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
Zoom
On/Off Labels
Reduce Transparency
Increase Contrast
Colour 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
Warranty
Device warranty
24 months
Compatibility
iPhone models
iPhone 11 and later, with iOS 26 and later
Face features
Alarm
Yes
World clock
Yes
Weather
Yes
Timer
Yes
Stopwatch
Yes
Calendar
Yes
Control method
Touchscreen
Yes
Side button
Yes
Digital crown
Yes - with haptic feedback
Built-in Devices
Built-in microphone
Yes - three-microphone array with beamforming and wind noise mitigation
Built-in speakers
Yes - dual speakers
Software
Operating system
watchOS
How useful was this page?
Thanks for your feedback, we have recorded your rating of this guide. You can give any other feedback by using the form below.
Thank you for your feedback
Thank you for taking the time to give us feedback. All feedback helps us continue to provide the best online support for our customers and is very much appreciated.