Body     
Dimensions     46 x 39 x 9.7 mm

Weight     29.3 g (42mm), 35.3 g (46mm) (1.02 oz)
Build     Glass front, ceramic/sapphire crystal back, aluminum frame
SIM     eSIM
IP6X certified
50m water resistant
ECG certified (region dependent SW application; HW available on all models)
Depth gauge to 6m

Display     
Type     Retina LTPO3 OLED, 2000 nits (peak)
Size     1.96 inches
Resolution     496 x 416 pixels (~330 ppi density)
Protection     Ion-X strengthened glass
Always-on display
Wide-angle OLED

Platform     
OS     watchOS 11, upgradable to watchOS 11.1
Chipset     Apple S10
CPU     Dual-core
GPU     PowerVR

Memory     
Card slot     No
Internal     64GB
Camera           No

Sound     
Loudspeaker     Yes
3.5mm jack     No

Comms     
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

Features     
Sensors     Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body), temperature (water)
Temperature sensing (0.01˚ accuracy)
Ultra Wideband (UWB) support (gen2 chip)
Media playback

Battery     
Type     Li-Ion 327 mAh, non-removable
Charging     Wireless, 0-80% in 30 min (advertised)