41mm case Retina LTPO OLED display that is always on Lumens up to 1000 nits Aluminum cases with Ion-X glass displays Stainless steel cases with sapphire crystal displays Models of GPS and GPS + Cellular 64-bit dual-core S8 SiP with a W3 wireless chip Ultra Wideband (U1) chip 14 A digital crown that provides haptic feedback The accelerometer 256 g-forces maximum with The detection of falls and crashes Gyroscope with a high-dynamic-range Sensing temperature An app and blood oxygen sensor ECG app and electrical heart sensor An optical heart sensor of the third generation Notifications of elevated and decreased heart rates Notice of irregular rhythm Emergency SOS International Emergency Calling Identification of Crash Detection of Falls 50 meters of water-resistant IP6X dust resistance LTE and UMTS Wi-Fi Bluetooth 5.0 GPS/GNSS/GLONASS/BeiDou Compass with a front crystal that is resistant to cracking Altimeter that is always on 32GB built-in speaker and microphone Quick charge