U80 Bluetooth Smart Watch Outdoor Sports Pedometer with Micphone Touch Screen for Android Phones iPhones (Black) Bluetooth Smart Watch compatible with all Bluetooth V4.0 or above enabled smartphones, tablets and PCs (support Android 2.3 or above),such as iPhone 4, 4S, 5, 5S, Sumsung S3, S4, Handsfree Speaker Phone.Answer or Dial calls from your wrist.Ringing reminder when you receive a call.Display the number or name of incoming call. Time / Date / Week / Battery state display Music Player.Play the music in your phone (after Bluetooth paring. Stopwatch / Pedometer Capacative Touch Screen Rechargeable Batter. NOTE: Android System can support all functions mentioned in the description; But IOS only support Passometer, Calendar, Call Sync,Calculator,Clock,Stopwatch