- 45mm or 41mm case size
- Stainless steel
- Speaker
- Microphone
Control:
- Digital Crown with haptic feedback
- Side button
- Double tap gesture
- On-Device Siri^
Display:
- Always-On Retina LTPO OLED display
- Edge-to-edge display
- Ion-X front glass (Aluminum cases)
- Sapphire front crystal (Stainless steel cases)
- Up to 2000 nits maximum brightness
- 1 nit minimum brightness
Chip:
- S9 SiP with 64-bit dual-core processor
- 4-core Apple Neural Engine
- 64GB capacity
Sensors:
- Blood oxygen sensor and app3
- Electrical heart sensor and ECG app4
- Third-generation optical heart sensor
- High and low heart rate notifications4
- Irregular rhythm notifications5
- Sleep stages
- Temperature sensing6
- Compass with Waypoints and Backtrack
- Always-on altimeter
- High-g accelerometer
- High dynamic range gyroscope
- Ambient light sensor
Safety:
- Emergency SOS8
- International emergency calling9
- Crash Detection8
- Fall Detection8
Splash, Water and Dust:
- Water resistance 50m (swim proof)11
- Dust resistance IP6X19
Connectivity and Communication:
- L1 GPS, GNSS, Galileo, and BeiDou
- LTE and UMTS13
- Wi-Fi 4 (802.11n)
- Bluetooth 5.3
- Second-generation Ultra Wideband chip20
- Apple Pay
- GymKit
Power and Battery Life:
- Built-in rechargeable lithium-ion battery
- Up to 18 hours normal use16
- Up to 36 hours in Low Power Mode16
- USB-C magnetic fast charging cable
Environmental Requirements:
- Operational temperature: 32°F to 95°F (0°C to 35°C)
- Nonoperational storage temperature: 4°F to 113°F (-20° to 45°C)
- Relative humidity: 5% to 90% noncondensing
- Operating Altitude: 0 feet to 10,000 feet (0 m to 3000 m)
