S11 1.92 inch Color Screen Smart Watch, Support Air Pump + Balloon Type Accurate Blood Pressure Testing ECG About Product 1. Battery capacity: 370mAh 2. Bluetooth version :BT5.0 3. Charging method:Magnetic charging 4. Resolution:320x386 5. System: Android system 6.0 version or above,iOS system 11 version or above 6. Endurance Time:Use for 7-12 days and stand by for 30-40 days 7. Charging Time:About 3-4H 8. Watch languages: English, Chinese Jane, Russian, German, Japanese, French, Spanish, Italy, Portugal, Korean, Polish, Malaysian 9. APP languages:Chinese, traditional, English, Japanese, German, Russian, Italian, French, Spanish, Portuguese, Thai, Czech, Greek, Polish, Vietnamese, Turkish, Romanian, Hungarian, Danish, Finnish, Arabic, Ukrainian, Hebrew, Persian, Irish, Slovak, Norwegian, Korean, Croatian, Swedish 10. APP: HealthWear Function 1. Heart rate monitoring,blood pressure monitoring,blood oxygen monitoring 2. Step,distance,calorie 3. Sleep monitoring (sleep duration, sleep quality) 4. Air pump+balloon type accurate blood pressure testing, ECG electrocardiogram, blood glucose monitoring 5. Independent and accurate blood oxygen, body temperature, uric acid monitoring, blood lipid monitoring 6. Remote relatives and friends care,exercise mode, call reminder, alarm clock reminder, raise my hand and brighten the screen 7. Weather forecast, stopwatch, music control,information reminder