RioRand Bluetooth Smart Watch WristWatch U8 UWatch Fit for Smartphones IOS Android Apple iphone 4/4S/5/5C/5S Android Samsung S2/S3/S4/Note 2/Note 3 HTC Sony Blackberry(Black) Powered by RioRand Advanced Technology 1.48" Capacitive Touch Screen TFT LCD + Bluetooth V3.0+EDR; Time / Date / Week / Battery state display. Answer or Dial calls from your wrist. Ringing reminder when you receive a call. Ringing reminder once your mobile phone disconnected. Android System can support all function in the description BUT Iphone IOS only support:Passometer,Calendar,Call Sync,Calculator,Clock,Stopwatch.