Product type: Smart watch (Bluetooth call+ECG) Features: Bluetooth call, ECG, blood glucose, blood oxygen, blood pressure, heart rate, body temperature, NFC, play music Shell material: PC+ABS Strap: Silicon strap 22MM Compatible system: Android 4.4 and aboveiOS 8.2 and above Processor (MCU main control): JL AC7013A CPU160MHZ 640kb Plug-in UI FLASH: 64Mb Analog front-end chip: VP556ER Body temperature sensor: NTC thermal Accelerometer: Rohm KXT3-1057 Blood oxygen sensor : VP556ER (Dual PD) Display: High resolution screen 1.81 inches 240*284DPI Battery capacity: Pure cobalt lithium battery 270 mAh, 7-10 days of use, 30 days of standby (measured) Touch: CST816D full screen touch Vibration motor: Silent vibration Bluetooth: 3.0+5.1BLE (dual mode) Physical buttons: 1PCS Charging interface: Magnetic charging with short circuit protection Charging time: 2-3 hours Main function: ECG measurement, Automatic Infrared Oximetry, Bluetooth call Bluetooth music, Games, Voice assistant, Blood pressure monitoring, MET, Weather, Sleep monitoring, Blood glucose, heart rate monitor HRV, 10 sports modes, Ovulation period reminder for women, Temperature measurement, Step counting, calorie counting, distance measurement, Alarm clock, Information reminder, Rotate the wrist to turn on the screen, Remote photo, Reminder to pick up Reject, NFC, Mobile music control, Sedentary reminder, Stopwatch function, WeChat motion synchronization, Multi-dial switching, Heart rate alarm WaterproofIP67 Language support: Watch language support: (Chinese, English, traditional, Russian, German, French, Japanese,) Default English Message push: Chinese, Japanese, Korean, Latin, Cyrillic; Latin includes: (English, French, Spanish, Portuguese, German, Dutch, Vietnamese, Northern European, Central European, Southern European Italian, Southeast Asian, African); Cyrillic includes: (Russian, Eastern Europe, Asia), covering 150 countries APP: Chinese, Traditional Chinese, English, Japanese, Korean, German, Russian, Spanish, Italian, French, Vietnamese, Portuguese, Turkish, Czech, Polish, Persian 16 languages Packing list: 1 X Watch with packing box 1 X charging cable, 1 X instruction manual, 1 X QC label