41 x 35 x 10.7 mm (1.61 x 1.38 x 0.42 in)

42.3 g (1.48 oz)

1.69 inches Retina LTPO OLED

430 x 352 pixels (~326 ppi density)

Sapphire crystal glass protection

Always-on display

watchOS 10, 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 2 (UWB) support

Li-Ion 282 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 S9

CPU

Dual-core 

GPU

Power VR

64GB

No card slot

Graphite, Silver, Gold