About Product 1. Battery capacity: 230mAh 2. Bluetooth version :BLE5.0 3. Charging head specifications: charging 1A or less 4. Waterproof rating: IP68 5. System: Android system 5.0 version or above,iOS system 10.0 version or above 6. Charging time: 2 hours 7. Standby time:15 days 8. Working time: 5-7days 9. Band support languages: Chinese, English (default), German, French, Italian, Spanish, Japanese, Polish, Russian, Portuguese, Vietnamese, Korean, Arabic, Hebrew, Thai, Croatian, Turkish English, Czech, Dutch + Indonesian, Malay, Finnish, Greek, Romanian 10.Push supported languages: Chinese, English (default), German, French, Italian, Spanish, Japanese, Polish, Russian, Portuguese, Vietnamese, Korean, Arabic, Hebrew, Thai, Croatian, Turkish , Czech, Dutch + Indonesian, Malay, Finnish, Greek, Romanian Function 1. Bluetooth calling,heart rate monitoring,blood pressure monitoring,blood oxygen monitoring 2. Step,distance,calorie 3. Sleep monitoring (sleep duration, sleep quality) 4. Body temperature detection,sedentary reminder,call reminder and display 5. Multi-sport modes:walking,basketball,climb mountains,volleyball,run,table tennis,cycling,skipping rope,tennis,situp,badminton 6. Remote control camera,music control, alarm clock reminder,synchronous data to APK/APP 7. Message reminder, call rejection,stopwatch, countdown, find mobile phone, weather forecast