Top specifications
eSIM compatibility
No
Usage time
Standard: Up to 18 hours
Low Power Mode: Up to 32 hours
Low Power Mode: Up to 32 hours
Device warranty
24 months
Design
Interchangeable strap
Yes
Battery
Usage time
Standard: Up to 18 hours
Low Power Mode: Up to 32 hours
Low Power Mode: Up to 32 hours
Battery type
Lithium-ion
Charge time
15 minutes charge = up to 8 hours of normal use
8 minutes charge = up to 8 hours of sleep tracking
8 minutes charge = up to 8 hours of sleep tracking
Fast charge
Yes
Body
Weight (g)
40mm: 26.3
44mm: 32.9
44mm: 32.9
Dimensions (mm)
40mm: 40x34x10.7 (HxWxD)
44mm: 44x38x10.7 (HxWxD)
44mm: 44x38x10.7 (HxWxD)
Water resistant
Yes - up to 50m
Dust resistant
Yes - IP6X
Connectivity
NFC enabled
Yes
Location services
GLONASS
Galileo
QZSS
BeiDou
Galileo
QZSS
BeiDou
Wi-Fi
Yes - 4
Bluetooth
Yes - 5.3
Processor
Neural Processing Unit (NPU)
4‑core Neural Engine
Model
S10 chip with 64‑bit dual-core processor
Display
Display type
Always-On Retina display with LTPO and OLED
Brightness
Up to 1000 nits
Pixels per inch
326
Screen resolution
40mm: 324x394
44mm: 468x448
44mm: 468x448
Sensors
Optical heart rate sensor
Yes - second-generation
Accelerometer
Yes - high-g
Gyroscope
Yes - high dynamic range
Temperature
Yes
Altimeter
Yes - always-on
Compass
Yes
Sleep tracking
Yes
Ambient light sensor
Yes
Memory
Device memory
64GB
Features
Safety feature
Emergency SOS
International emergency calling
Crash Detection
Fall Detection
Backtrack
International emergency calling
Crash Detection
Fall Detection
Backtrack
Media player
Yes
Voice controls
Yes - Siri
Apple Pay
Yes
Navigation
Yes
Activity app
Yes
Cable length (m)
1
Siri
Yes - on-device
Gesture controls
Double tap
Wrist flick
Wrist flick
eSIM compatibility
No
GPS
Yes
Special features
GymKit
Sleep Score
Sleep apnoea notifications
Sleep Score
Sleep apnoea notifications
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
Calendar
Yes
Custom faces
Yes
Timer
Yes
Alarm
Yes
World clock
Yes
Weather
Yes
Stopwatch
Yes
Control method
Digital crown
Yes - with haptic feedback
Side button
Yes
Touchscreen
Yes
Built-in Devices
Built-in microphone
Yes
Built-in speakers
Yes
Software
Operating system
watchOS