Note Non medical equipment The health test function is for reference only and cannot be used for medical purposes Specification Model F57L bluetooth Version bluetooth 5 1 Compatible OS Support Android 4 4 and above Apple IOS 9 0 and above Operating Mode Full Touch APP Name H Band System Language Simplified Chinese Traditional Chinese English Japanese Korean German Russian Spanish Italian French Portuguese Turkish Hungarian Brazilian Portuguese Ukrainian APP Language English Chinese Simplified Chinese Traditional Korean German Japanese Russian Spanish Italian French Vietnamese Portuguese Persian Polish Turkish Czech Slovak Hungarian ArabicSpecial Features Information Reminder Call Reminder Message Reminder APP NotificationHealth Heart Rate Monitor Blood Pressure Monitor Blood Oxygen SpO2 Monitor Temperature Measurement Sleep Monitor Sedentary Reminder Exercise and Record Multiple Sports Modes Calorie Distance Step Count Application Music Control Camera Control Alarm Clock Stopwatch Weather Custom Dial Dial Market Brightness Adjustment Find Phone Do Not Disturb ModeTechnical Parameters Waterproof IP67 Screen Size 1 91 inch Material IPS LCD Resolution 280 320 pixels Battery Battery Capacity 260mAh Standby Time About 15 20 days Using Time About 4 7 days Charging Time About 2 3 hours Charging Type Magnetic chargingAppearanceDetails Material Band Material Environmental Silicone Watch Case Material Metal Alloy Size Dial SIze About 41 3