Apple watch series 8

L1 GPS, GLONASS, Galileo, QZSS, and BeiDou Compass Always-on altimeter Water resistant 50 meters3 Certified IP6X dust resistant2 Blood oxygen sensor (Blood Oxygen app)4 Electrical heart sensor (ECG app)5 Third-generation optical heart sensor International emergency calling6 Emergency SOS1 International roaming8 High-g accelerometer Up to 256 g-forces with Fall Detection and Crash Detection High dynamic range gyroscope Ambient light sensor Speaker Microphone Apple Pay GymKit Capacity 32GB Ceramic and sapphire crystal back