Top specifications
eSIM compatibility
No
Heart rate sensor
Yes - electrical
Usage time
Standard: Up to 24 hours
Low Power Mode: Up to 38 hours
Low Power Mode: Up to 38 hours
Device warranty
24 months
Design
Interchangeable strap
Yes
Battery
Usage time
Standard: Up to 24 hours
Low Power Mode: Up to 38 hours
Low Power Mode: Up to 38 hours
Battery type
Lithium-ion
Charge time
30 minutes charge = 80% battery
15 minutes charge = up to 8 hours of normal use
8 minutes charge = up to 8 hours of sleep tracking
15 minutes charge = up to 8 hours of normal use
8 minutes charge = up to 8 hours of sleep tracking
Fast charge
Yes
Body
Weight (g)
42mm (aluminium): 30.3
42mm (titanium): 34.6
46mm (aluminium): 37.8
46mm (titanium): 43.1
42mm (titanium): 34.6
46mm (aluminium): 37.8
46mm (titanium): 43.1
Dimensions (mm)
42mm: 42x36x9.7 (HxWxD)
46mm: 46x39x9.7 (HxWxD)
46mm: 46x39x9.7 (HxWxD)
Water resistant
Yes - up to 50m
Dust resistant
Yes - IP6X
Connectivity
NFC enabled
Yes
Wi-Fi
Yes - 4
Location services
GLONASS
Galileo
QZSS
BeiDou
Galileo
QZSS
BeiDou
Bluetooth
Yes - 5.3
Processor
Neural Processing Unit (NPU)
4‑core Neural Engine
Model
S10 chip with 64‑bit dual-core processor
Display
Brightness
Up to 2000 nits
Display type
Always-On Retina display
LTPO3 wide-angle OLED
LTPO3 wide-angle OLED
Pixels per inch
326
Screen resolution
42mm: 374x446
46mm: 416x496
46mm: 416x496
Sensors
Optical heart rate sensor
Yes - third-generation
3D depth sensor
Yes - up to 6m
Temperature
Temperature sensor
Water temperature sensor
Water temperature sensor
Altimeter
Yes - always-on
Sleep tracking
Yes
Gyroscope
Yes - high dynamic range
Blood oxygen sensor
Yes
Accelerometer
Yes - high-g
Compass
Yes
Blood pressure sensor
Yes
Ambient light sensor
Yes
Heart rate sensor
Yes - electrical
Memory
Device memory
64GB
Features
Safety feature
Emergency SOS
International emergency calling
Crash Detection
Fall Detection
Noise monitoring
Backtrack
International emergency calling
Crash Detection
Fall Detection
Noise monitoring
Backtrack
Media player
Yes
Navigation
Yes
Activity app
Yes
Siri
Yes
Cable length (m)
1
Gesture controls
Double tap
Wrist flick
Wrist flick
GPS
Yes
eSIM compatibility
No
Special features
GymKit
Sleep Score
Hypertension notifications
Sleep apnoea notifications
Sleep Score
Hypertension notifications
Sleep apnoea notifications
Voice controls
Yes - Siri
Apple Pay
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
Auto 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
Auto Transcription
Live Speech
Accessibility Shortcut
Mono Audio
Taptic Time
Personal Voice
Live Listen
Warranty
Device warranty
24 months
Compatibility
iPhone models
iPhone 11 or later, with iOS 26 or later
Face features
Custom faces
Yes
Alarm
Yes
Weather
Yes
World clock
Yes
Timer
Yes
Stopwatch
Yes
Calendar
Yes
Control method
Side button
Yes
Digital crown
Yes - with haptic feedback
Touchscreen
Yes
Built-in Devices
Built-in microphone
Yes
Built-in speakers
Yes
Software
Operating system
watchOS