AR68 Smart Watch Fitness Tracker Bluetooth WatchModel : AR-68CPU: Hs6620DBluetooth Version: BT 4.0 or aboveCompatible OS: Android 4.4 or above , iOS 8.0 or aboveOperating Mode: Single Touch KeyWaterproof: IP67, Do not support swimming and take a shower.Standby Time: About 3-7 daysUsing time: About 1..