Smartoby Amoled BT Smart Watch Medical Grade, Electrocardiographic ECG. Supported CFDA/ FDA Medical Certification, MAX 86176, and 512HZ ECG rate Zinc Body Android 4.4 and above, IOS 8.2 and Above Compatible Optical Lense , Temprature Sensor Tempered Glass 230 mAh Lithium Battery Full Touch Screen Mute Vibration Bluetooth 5.1BLE 2 Buttons Magnetic Charger Main Functions ECG, Blood Oxygen, Sleep Monitoring, HRVbLorentz Scatter Diagram Breathing Training, Heart Rate, 10 Multi-Sport Modes Female Menstruation, Body Temperature, Exercise Measurement Alarm Clock, Information Reader, Turn Bright twist bright screen, Remote Photographing, Call Reminder, OTA upgrade, Music Control Sedentary Reminder, Stopwatch, WeChat, Multiple Dials, Heart Rate.>