Hlion U8 Bluetooth Smart Watch Wrist Wrap Watch for IOS, Android, Symbian, Blackberry OS and Windows Phone -Black Android System can support all function in the description such as IOS system such as iPhones only support:Passometer,Calendar,Call Sync,Calculator,Clock,Stopwatch Transmitting Range: 10m Sync SMS/call history(only for android phone, you need download apk) Ring reminder when your smart phone receive a message Bluetooth Smart Watch WristWatch for Android Samsung Galaxy HTC LG 1.48" Capacitive Touch Screen TFT LCD + Bluetooth V3.0+EDR Time / Date / Week / Battery state display Protocol: A2DP + HFP 1.5 + HS P 1.2 Range of Frequency: 2.4GHz spectrum