45 x 38 x 10.7 mm (1.77 x 1.50 x 0.42 in)

51.5 g (1.83 oz)

1.9 inches Retina LTPO OLED

484 x 396 pixels (~326 ppi density)

Sapphire crystal glass protection

Always-on display

watchOS 9.0, upgradable to watchOS 10.1.1

Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body) 

Temperature sensing (0.01? accuracy)      

Ultra Wideband (UWB) support

Li-Ion 308 mAh, non-removable

Wireless charging

IP6X certified, 50m water resistant

Glass front, ceramic/sapphire crystal back, stainless steel frame

WLAN

Wi-Fi 802.11 b/g/n, dual-band

Bluetooth

5.3, A2DP, LE

Positioning

GPS, GLONASS, GALILEO, QZSS, BDS

NFC

Yes

Radio

No

USB

No

GSM/ HSPA/ LTE

eSIM 

Chipset

Apple S8

CPU

Dual-core 

GPU

Power VR

32GB, 1GB RAM

No card slot

Graphite, Silver, Gold