Apple Watch Ultra 4
Popular Topics
Top specifications
Heart rate sensor
Yes - electrical
Usage time
Standard: Up to 50 hours
Low Power Mode: Up to 84 hours
Outdoor Workout: Up to 18 hours
Extended Workout: Up to 25 hours
Max Extended Workout: Up to 45 hours
Low Power Mode: Up to 84 hours
Outdoor Workout: Up to 18 hours
Extended Workout: Up to 25 hours
Max Extended Workout: Up to 45 hours
Near Field Communication (NFC)
Yes
Device warranty
24 months
Battery
Usage time
Standard: Up to 50 hours
Low Power Mode: Up to 84 hours
Outdoor Workout: Up to 18 hours
Extended Workout: Up to 25 hours
Max Extended Workout: Up to 45 hours
Low Power Mode: Up to 84 hours
Outdoor Workout: Up to 18 hours
Extended Workout: Up to 25 hours
Max Extended Workout: Up to 45 hours
Charge time
45 minutes charge = 80% battery
Battery type
Lithium-ion
Fast charge
15 minutes charge = up to 18 hours battery life
5 minutes charge = up to 10 hours of sleep tracking
5 minutes charge = up to 10 hours of sleep tracking
Wireless charging
Yes
Design
Interchangeable strap
Yes
Body
Weight (g)
Natural: 63
Black: 63.1
Black: 63.1
Dimensions (mm)
49x44x12 (HxWxD)
Water resistant
Yes - up to 100m
Dust resistant
Yes - IP6X
Processor
GPU
PowerVR
Neural Processing Unit (NPU)
4‑core Neural Engine
Model
S11 chip with 64‑bit dual‑core processor
Audio Intelligence (Live Rewind, Siri Recap, Shazam, Sound Recognition)
Audio Intelligence (Live Rewind, Siri Recap, Shazam, Sound Recognition)
Connectivity
Near Field Communication (NFC)
Yes
Location services
GLONASS
Galileo
QZSS
BeiDou
Galileo
QZSS
BeiDou
Bluetooth
Yes - 5.3
Wi-Fi
Yes - 4
LTE
Yes
Display
Brightness
Up to 3000 nits
Minimum: 1 nit
Minimum: 1 nit
Display type
Always-On Retina display
LTPO3 wide-angle OLED
Sapphire crystal
LTPO3 wide-angle OLED
Sapphire crystal
Screen size (inches)
1.98
Pixels per inch
326
Screen resolution
422x514
Refresh rate
1Hz
Display modes
Night Mode
Network
4G
Yes
5G
Yes
Sensors
Optical heart rate sensor
Yes
Accelerometer
Yes - High-g
Ambient light sensor
Yes
Depth sensor
Yes
Altimeter
Yes
Gyroscope
Yes
Temperature
Yes
Blood oxygen levels
Yes
Sleep tracking
Yes
Compass
Yes
Menstrual tracker
Yes
Barometer
Yes
Heart rate sensor
Yes - electrical
Watch Strap
Min. wrist circumference (mm)
130
Max. wrist circumference (mm)
210
Memory
Device memory
64GB
Features
Safety feature
Satellite communications
Emergency SOS
International emergency calling
Siren
Torch
Fall Detection
Crash Detection
Noise monitoring
Backtrack
Check In
Last Emergency Call Availability Waypoint
Emergency SOS
International emergency calling
Siren
Torch
Fall Detection
Crash Detection
Noise monitoring
Backtrack
Check In
Last Emergency Call Availability Waypoint
Media player
Yes
Voice controls
Yes
Action button
Yes - customisable
Power cord length
1m
GPS
Yes
Apple Pay
Yes
Activity app
Yes
Gesture controls
Yes
Special features
GymKit
Custom workouts
Customisable Workout Views
Training Load / Workout Effort Tracking
Heart Rate Zones (customisable)
Post‑workout heart rate
Running:
VO₂ max
Race Route
Pacer
Precision Start
Cadence, Stride Length, Ground Contact Time, Vertical Oscillation and Running Power
Automatic track detection
Multisport workout
Hiking:
Compass with bearing, incline, elevation and coordinates
Custom waypoints
Automatically generated waypoints to cellular connectivity
Offline maps with custom route creation
Elevation alerts
Backtrack GPS data
Cycling:
Average speed, elevation gained and distance
Bluetooth-compatible with power meters
Functional Threshold Power (with power meter connection)
Live Activity on iPhone
Cadence, speed, power, power zones (with power meter connection)
Swimming:
Custom workouts (pool swim) with haptics to cue the next interval
Splits and auto sets
SWOLF score
Automatic stroke and count detection (including kickboard)
Water temperature
Average pace, total distance, heart rate and lengths
Diving:
Recreational dive to 40m
Automatic launch at 1m
Current and maximum depth duration
GPS entry and exit points
Depth gauge
Water temperature sensor
Custom workouts
Customisable Workout Views
Training Load / Workout Effort Tracking
Heart Rate Zones (customisable)
Post‑workout heart rate
Running:
VO₂ max
Race Route
Pacer
Precision Start
Cadence, Stride Length, Ground Contact Time, Vertical Oscillation and Running Power
Automatic track detection
Multisport workout
Hiking:
Compass with bearing, incline, elevation and coordinates
Custom waypoints
Automatically generated waypoints to cellular connectivity
Offline maps with custom route creation
Elevation alerts
Backtrack GPS data
Cycling:
Average speed, elevation gained and distance
Bluetooth-compatible with power meters
Functional Threshold Power (with power meter connection)
Live Activity on iPhone
Cadence, speed, power, power zones (with power meter connection)
Swimming:
Custom workouts (pool swim) with haptics to cue the next interval
Splits and auto sets
SWOLF score
Automatic stroke and count detection (including kickboard)
Water temperature
Average pace, total distance, heart rate and lengths
Diving:
Recreational dive to 40m
Automatic launch at 1m
Current and maximum depth duration
GPS entry and exit points
Depth gauge
Water temperature sensor
Navigation
Yes
Wellness monitoring
Health Sensing System
Readiness app
Vitals app with heart rate, respiratory rate, wrist temperature, blood oxygen, sleep duration and heart rate variability (HRV)
Blood Oxygen app
ECG app
Heart Rate app
High and low heart rate notifications
Recovery HRV
High‑frequency background heart rate tracking
Irregular rhythm notifications
Advanced Cycle Tracking app with fertile window estimates, retrospective ovulation estimates, and perimenopause and menopause support
Medications app
Mindfulness app with state of mind tracking
Noise app
Sleep app including sleep stages
Sleep score
Sleep apnoea notifications
Hypertension notifications
Readiness app
Vitals app with heart rate, respiratory rate, wrist temperature, blood oxygen, sleep duration and heart rate variability (HRV)
Blood Oxygen app
ECG app
Heart Rate app
High and low heart rate notifications
Recovery HRV
High‑frequency background heart rate tracking
Irregular rhythm notifications
Advanced Cycle Tracking app with fertile window estimates, retrospective ovulation estimates, and perimenopause and menopause support
Medications app
Mindfulness app with state of mind tracking
Noise app
Sleep app including sleep stages
Sleep score
Sleep apnoea notifications
Hypertension notifications
eSIM compatibility
Yes
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
Sound Recognition
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
Sound Recognition
Warranty
Device warranty
24 months
Compatibility
iPhone models
iPhone 11 and later, with iOS 27 and later
Face features
Alarm
Yes
World clock
Yes
Weather
Yes
Timer
Yes
Stopwatch
Yes
Custom faces
Yes
Calendar
Yes
Control method
Digital crown
Yes - with haptic feedback
Side button
Yes
Touchscreen
Yes
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 27
Virtual assistant
Siri
Yes - AI
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