Parameter Screen display: 1.52-inch full-fit high-definition screen, 360*360 pixels Battery: capacity 400mAh polymer battery; fully charged in 180 minutes Waterproof: IP68 waterproof, test in room temperature water 1.5 deep for half an hour Bluetooth: BT3.0/Ble5.1 Touch: full touch screen Memory function: RAM: 192KB ROM: 128M (external Flash) Support version Android 5.0 and above and IOS9.0 and above APP name:RDFit Charging method: Magnetic wireless charging (wireless fast charging) Language APP language: Simplified Chinese, English, Russian, Spanish, GerAdult, Italian, French, Portuguese, Polish, Dutch, Greek, Turkish, RoAdultian, Japanese, Chinese (traditional), Hebrew, Danish , Serbian, Swedish, Czech, Slovak, Hungarian, Arabic, Croatian, Hindi, Korean, Burmese, Finnish, Malaysian Watch languages: Simplified Chinese, English (default), Russian, Spanish, GerAdult, French, Portuguese, Polish, Turkish, Hebrew, Arabic, Indonesian, Vietnamese, Thai, Persian, Malaysian Function Calls: support Bluetooth calls, incoming call reminders, frequently used contacts (20), incoming call information synchronization (open message notification), call records, dial pad, Music function: can control mobile phone music and play music Memory function: RAM: 192KB ROM: 128M (external Flash) Health monitoring: step counting, sleep monitoring, heart rate, true blood oxygen, blood pressure, sedentary reminder, drinking water reminder, Sports step counting: sports steps, sports mileage records, calorie consumption, multiple sports modes Standby time: about 6 days in normal use Other functions: Multi-sport mode: running, cycling, basketball, football, climbing, rope skipping, dancing, yoga, rock climbing, boxing, etc. 50 sports modes, compass, altitude, pedometer, multi-sport mode, information reminder, stopwatch , music control, play Bluetooth music, camera control, anti-lost, alarm clock, weather, APP dial push, OTA upgrade, voice assistant, button customization, access control NFC (optional/not matching),