IP6X certified 100m water resistant (WR100) 40m swimproof/diving (EN13319) MIL-STD 810H certified ECG certified (region dependent SW application; HW available on all models)
DISPLAY
Type
Retina LTPO OLED, 3000 nits (peak)
Size
1.92 inches
Resolution
502 x 410 pixels (~338 ppi density)
Protection
Sapphire crystal glass
Always-on display
PLATFORM
OS
watchOS 10, upgradable to watchOS 10.1
Chipset
Apple S9
CPU
Dual-core
GPU
PowerVR
MEMORY
Card slot
No
Internal
64GB
CAMERA
No
SOUND
Loudspeaker
Yes, with dual speakers (86-decibel)
3.5mm jack
No
COMMS
WLAN
Wi-Fi 802.11 b/g/n, dual-band
Bluetooth
5.3, A2DP, LE
Positioning
GPS (L1+L5), GLONASS, GALILEO, BDS
NFC
Yes
Radio
No
USB
No
FEATURES
Sensors
Accelerometer, gyro, heart rate, barometer, always-on altimeter (-500m to 9000m), compass, SpO2, VO2max, temperature (body), temperature (water)
Temperature sensing (0.01˚ accuracy) Depth gauge (±1m accuracy) Ultra Wideband 2 (UWB) support