Product parameterBluetooth: BLE 5.0Call Bluetooth: BLE 3.0Waterproof level: IP67Main control chip: HS6621, 128M flash, Zhongke call chipAcceleration sensor: SC7A20Heart rate module: SC7R30, 128KB+1M, red light + green light module, support dynamic heart rate,blood pressure/oxygen detectionDisplay type: 1.28 inch pure round colorful displayTouch screen: full touchResolution 240*240 pixelsBattery type: polymer lithium batteryBattery capacity: 260 mACharging time is about 60 minutesWorking time: 5-7 daysStandby time is about 30 daysSupport mobile phone system: Android 4.4 and above, IOS8.4 and above 8.4The main functionAnswer/make calls, support mobile phone to connect watch to answer calls and listen to songs, heart rate monitoring,Blood pressure, blood oxygen monitoring, sleep monitoring, exercise pedometer/calorie consumption/exercise time,Incoming call reminder and display, message push and display, remote control camera, automatic heart rate test, multi-sports mode, sedentary reminder, alarm settingLanguageAPP supported languages: Chinese, English, Chinese [Traditional], Japanese, Korean, French, German, Russian, Polish, Spanish, Portuguese, Dutch, ArabicBracelet support languages: Chinese, English, French, Spanish, Portuguese, Russian, Polish, etc. 23 countries