LAUNCH Announced 2021, September 14 Status Available. Released 2021, October 15 BODY Dimensions 41 x 35 x 10.7 mm (1.61 x 1.38 x 0.42 in) Weight 42.3 g (1.48 oz) Build Glass front, ceramic/sapphire crystal back, stainless steel frame 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 1.69 inches Resolution 430 x 352 pixels (~326 ppi density) Protection Sapphire crystal glass Always-on display PLATFORM OS watchOS 8.0, upgradable to 8.4 Chipset Apple S7 CPU Dual-core GPU PowerVR MEMORY Card slot No Internal 32GB CAMERA No SOUND Loudspeaker Yes 3.5mm jack No COMMS WLAN Wi-Fi 802.11 b/g/n, dual-band Bluetooth 5.0, A2DP, LE GPS Yes, with A-GPS, GLONASS, GALILEO, QZSS, BDS NFC Yes Radio No USB No FEATURES Sensors Accelerometer, gyro, heart rate, barometer, always-on altimeter, compass, SpO2, VO2max Natural language commands and dictation (talking mode) Ultra Wideband (UWB) support BATTERY Type Li-Ion 284 mAh (1.09 Wh), non-removable Charging Wireless charging