It is a great.If you want a bluetooth mobile watches, please buy bingo U8smart mobile.It is a New Bluetooth Smart U8 Watch Which Is Compatible With All Bluetooth V2.0 Or Above Enabled Smartphones, Tablets And Pcs( Support Android 2.3 Or Above), Such As Sumsung S3, S4, Note 2, Note 3, Note 4 Etc. Features 1.48 Capacitive Touch Screen Tft Lcd Time/Date/Week/Battery State Display Ringing Reminder When You Receive A Call Ringing Reminder Once Your Mobile Phone Disconnected Display The Number Or Name Of Incoming Calls Answer.You Can Control Your Cellphone To Take Photo From The Watch.( Only For Android Phone) Stopwatch, Altitude Meter, Photograph, Barometer, Vibration Bluetooth Version: V3.0+ Edr Bluetooth Protocol: A2dp+ Hfp 1.5+ Hs P 1.2 Range Of Frequency: 2.4ghz Spectrum Ambient Noise:= 75db Transmitting Range:= 10m Charging Time: About 1 Hour Talk Time: About 3 Hours Music Play Time: About 6 Hours Standby Time: About 160 Hours Power Supply: Built-In 230mah Rechargeable Battery