F57L 1.91 inch Color Screen Smart Watch,Support Heart Rate Monitoring Blood Pressure Monitoring About Product 1. Battery capacity: 260mAh 2. Bluetooth version :Bluetooth 5.1 3. Charging method:Magnetic charging 4. Waterproof rating: IP67 waterproof 5. Resolution:286x320 6. System: Android system 4.4 version or above,iOS system 9.0 version or above 7. Bracelet supports languages: Chinese, English, Korean, German, French, Italian, Spanish, Japanese, Polish, Russian, Portuguese, Thai, Turkish, Dutch, Indonesian, Slovak, and Arabic. ,Malaysian,Czech 8. APP supports languages: Chinese, Chinese (Traditional), English, German, French, Italian, Japanese, Polish, Russian, Portuguese, Arabic, Thai, Turkish, Czech, Dutch, Greek, Hungarian English, Hindi, Korean, Slovak Function 1. Blood sugar monitoring,heart rate monitoring,blood pressure monitoring,blood oxygen monitoring 2. Step,distance,calorie 3. Sleep monitoring (sleep duration, sleep quality) 4. Multi-sport modes:outdoor running, outdoor walking, hiking, indoor running, indoor walking,stepper, outdoor cycling, indoor cycling, elliptical machine, rowing machine, yoga...etc 50 kinds 5. Body temperature test,music playing, stopwatch,countdown, calculator, weather display 6. Female physiological period function,remote photography, wrist raising and screen lighting, looking for mobile phones 7. Call reminder,information reminder, alarm clock reminder,long sitting reminder, heart rate alarm reminder, bluetooth disconnection reminder