LAUNCHAnnounced2020, September 15StatusAvailable. Released 2020, September 18BODYDimensions44 x 38 x 10.4 mm (1.73 x 1.50 x 0.41 in)Weight47.1 g (1.66 oz)BuildGlass front (Sapphire crystal), ceramic/sapphire crystal back, stainless steel frameSIMeSIM 50m water resistant ECG certified (region dependent SW application; HW available on all models)DISPLAYTypeRetina LTPO OLED, 1000 nits (peak)Size1.78 inches, 10.0 cm2 (~60.0% screen-to-body ratio)Resolution448 x 368 pixels (~326 ppi density)ProtectionSapphire crystal glass Always-on displayPLATFORMOSwatchOS 7.0, upgradable to 7.3ChipsetApple S6CPUDual-coreGPUPowerVRMEMORYCard slotNoInternal32GB 1GB RAMCAMERA NoSOUNDLoudspeakerYes3.5mm jackNoCOMMSWLANWi-Fi 802.11 b/g/n, dual-bandBluetooth5.0, A2DP, LEGPSYes, with A-GPS, GLONASS, GALILEO, QZSSNFCYesRadioNoUSBNoFEATURESSensorsAccelerometer, gyro, heart rate (2nd gen), barometer, always-on altimeter, compass, SpO2, VO2max Natural language commands and dictation (talking mode) Ultra Wideband (UWB) supportBATTERYTypeLi-Ion 303.8 mAh (1.17 Wh), non-removableChargingWireless chargingStand-byUp to 18 h (mixed usage)