Display - Always-On Retina display, Up to 1000 nits, OLED, LTPO Notificatios - High and low heart rate notifications, Irregular rhythm notifications, Low cardio fitness notifications Sleep tracker - Sleep Tracking, Sleep apnea notifications , Sleep score Vitals app featuring heart rate, respiratory rate, wrist temperature, and sleep duration, Water resistant 50m , Emergency SOS , International emergency calling, Fall Detection and Crash Detection , S10 chip, Wrist flick gesture, Double tap gesture, Find iPhone, Battery Up to 18 hours and up to 32 hours in Low Power Mode, Fast-charge capable (0–80% in about 45 minutes ; 15 minutes for up to 8 hours)