BODY
Dimensions
45 x 38 x 10.7 mm (1.77 x 1.50 x 0.42 in)
Weight
42.3 g (41mm), 51.5 g (45mm) (1.48 oz)
Build
Glass front, ceramic/sapphire crystal back, stainless steel frame
SIM
eSIM (Cellular models only)
DISPLAY
Type
Retina LTPO OLED, 2000 nits (peak)
Size
1.9 inches
Resolution
484 x 396 pixels (~326 ppi density)
Protection
Sapphire crystal glass
Always-on display
IP6X certified
50m water resistant
ECG certified (region dependent SW application; HW available on all models)
PLATFORM
OS
watchOS 10
Chipset
Apple S9
CPU
Dual-core
GPU
PowerVR
MEMORY
Card slot
No
Internal
64GB
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
Other
Sensors
Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max, temperature (body)
Temperature sensing (0.01° accuracy)
Natural language commands and dictation (talking mode)
Ultra Wideband 2 (UWB) support
BATTERY
Type: Li-Ion 308 mAh, non-removable
Charging: Wireless
