Size / fit: Universal (can be configured for either S / M or M / L length)
Size: 45 mm
Weight: 51.5g
Strap: Silicone, Pin-and-tuck closure
Connectivity: WiFi, Bluetooth 5.0
GPS: Yes
Battery type: Built-in rechargeable Lithium-ion battery
Charging method: Wireless charger
Battery life: Up to 18 hours
Type: Always-On Retina OLED display
Touchscreen: Yes
Resistance: Water resistant (up to 50 m)
Voice assistant: Siri
Health & fitness tracking: Blood oxygen, ECG app, High and low heart rate notifications, Irregular rhythm notifications, Sleep stages, Menstrual cycle tracking
Smart functions: Voice calling, Read and reply to texts & emails, Smartphone notifications, Contactless payment, Music remote, Alarm
Other features: S8 with 64-bit dual-core processor, W3 Apple wireless chip, U1 chip, International emergency calling, Emergency SOS, Fall detection, Crash detection, Noise monitoring, 32 GB capacity
Sensors: Accelerometer, Barometer, Compass, Pedometer, Gyroscope, Heart rate, Ambient light sensor, Temperature