Description:Color: black, silverChip: Realtek8762DTAPP: RDFitCompatible system: Android5.0 or above IOS9.0 or aboveFLASH memory: 128MBScreen size: 1.28"Pixel: IPS 240*240Touch type: full touch screenBluetooth: BT 3.0/5.0Sensor: Heart rate sensor Tianyihexin 3301Gravity Sensor: SC7A20Battery type: polymer lithium batteryCapacity: 3.7V/220mAhCharging method: Magnetic charging Appearance material: Zinc alloy Waterproof grade: IP67 waterproofCharging time: 1.5HBattery life: 3-7DaysAPP language: English (default), Simplified Chinese, Russian, Spanish, German, Italian, French, Portuguese, Polish, Dutch, Greek, Turkish, Romanian, Japanese, Chinese (Traditional), Hebrew Incoming language, Danish, Swedish, Czech, Persian, Hungarian, Arabic.Bracelet size: 46.4*46.4*12.3mmWeight: 50gWristband size: total length 226.6mm, width 21mmSpecifications:Main functions: calculator, brightness adjustment, calendar, notification messages, heart rate, step counting, vibration mode, sleep monitoring, exercise, alarm clock, factory reset, stopwatch, timer, exercise track, do not disturb mode, screen off time setting, often bright settingSliding down menu: Do Not Disturb Mode, Bluetooth Switch, Brightness Adjustment, Wallpaper Lock, Screen Off Clock, Bedside Clock, NFC Access Control.Right swipe split screen menu: 6 random appsLeft-swipe split-screen menu: 4 small programs can be addedSwipe up menu: Notification messagesDouble-click the button to switch the menuPackage Included:1*Smart Watch1*Charging cable1*Packing box1*User Manual