Apple Watch SE
Technical Specifications
Material and Finish
Aluminum case
Midnight
Size and Weight
- Height: 44mm
- Width: 38mm
- Depth: 10.7mm
- Weight (GPS): 32.9 grams
- Weight (GPS + Cellular): 33 grams
- Fits 140–245mm wrists
Hardware and Buttons
Digital Crown
Microphone
Side button
Speaker/air vent
Optical heart sensor
Controls
- Digital Crown with haptic feedback
- Side button
- Siri
Chip
- S8 SiP with 64-bit dual-core processor
- 2-core Neural Engine
- 32GB capacity
Sensors
- Second-generation optical heart sensor
- Compass
- Always-on altimeter
- High-g accelerometer
- High dynamic range gyroscope
- Ambient light sensor
Health and Wellness
- Heart Rate app
- High and low heart rate notifications
- Irregular rhythm notifications1
- Medications app
- Mindfulness app
- Noise app
- Sleep app including sleep stages
Display
- Retina LTPO OLED display
- Ion-X front glass
- Up to 1000 nits maximum brightness
- 326 pixels per inch
Power and Battery Life
- All-day battery life, up to 18 hours of normal use2
- Built-in rechargeable lithium-ion battery
- Up to 80% charge in about 1.5 hours
Workouts and Activity
- Custom interval workouts
- Customizable Workout Views
- Heart Rate Zones
- Race Route
- Stride length, ground contact time, and vertical oscillation
- Automatic track detection
- Multisport workout
- Bearing, incline, elevation, and coordinates
- Custom waypoints
- Automatically generated waypoints to cellular connectivity
- Backtrack GPS data
- Topographic maps for over 1000 national and regional parks (U.S. only)
- Average speed, elevation gained, and distance
- Connection to cycling accessories via Bluetooth
- Functional Threshold Power
- Power Zones
- Cadence
- Live Activity on iPhone
- Pool swim or open water swim
- Splits and auto sets
- SWOLF score
- Automatic stroke detection
- Kickboard
- Average pace, total distance, and laps
Safety
- Emergency SOS
- International emergency calling
- Crash Detection
- Fall Detection
Durability
Water resistance 50m (swimproof)
Connectivity
- L1 GPS, GNSS, Galileo, and QZSS
- LTE and UMTS
- Wi-Fi 4 (802.11n)
- Bluetooth 5.3
- Apple Pay
- GymKit
- Supports Apple Watch For Your Kids
Accessibility
Built-in accessibility features supporting vision, mobility, hearing, and cognitive disabilities.
- 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
Environmental Requirements
Operating temperature:
0° to 35° C
Nonoperating storage temperature:
–20° to 45° C
Relative humidity:
5% to 90% noncondensing
Operating altitude:
0m to 3000m
