Body Dimensions 45 x 38 x 10.7 mm (1.77 x 1.50 x 0.42 in) Weight 32 g (41mm), 38.8 g (45mm) (1.13 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)
Display Type Retina LTPO OLED, 1000 nits (peak) Size 1.9 inches Resolution 484 x 396 pixels (~326 ppi density) Protection Ion-X strengthened glass Always-on display
Platform OS watchOS 8.0, upgradable to watchOS 10.6 Chipset Apple S7 CPU Dual-core GPU PowerVR
Memory Card slot No Internal 32GB 1GB RAM eMMC 5.1
Comms WLAN Wi-Fi 802.11 b/g/n, dual-band Bluetooth 5.0, 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 Ultra Wideband (UWB) support
Battery Type Li-Ion 309 mAh (1.19 Wh), non-removable Charging Wireless, 0-80% in 45 min (advertised)
Battery 95%