Continuous heart rate Monitoring, support resting heart rate, single heart rate, other measuring functions Bluetooth telephony, contacts, call recording Local music playback on the clock and connected smartphone Gps and GLONASS positioning, height barometer for mountaineering Monitoring of oxygen recording, training status, training load, data analysis of the regeneration time, professional training instructions. 1.39 inch AMOLED 454 x 454 HD, The AMOLED touchscreen supports slide and touch gestures. Sensors: Accelerometer, Gyroscope,Geomagnetic, Optical heart rate, Ambient light, Air pressure, Capacitive. Battery life lasts 14 days for typical use. Buttons: Power button, function button. Water Resistance up to 50 meters. Supports Android 4.4 or later, iOS 9.0 or later.