This is a new Bluetooth Smart U Watch which is compatible with all Bluetooth V2.0 or above enabled smartphones， tablets and PCs (support Android 2.3 or above)，such as iPhone 4， 4S， 5， 5S， Sumsung S3， S4， Note 2， Note 3， Note 4 etc.1.48" Capacitive Touch Screen TFT LCDTime / Date / Week / Battery state displayRinging reminder when you receive a callRinging reminder once your mobile phone disconnectedDisplay the number or name of incoming callsAnswer or Dial calls from your wristStopwatch functionSupport hands-free callsPlay the music in your phone (after Bluetooth paring)Sync phone book/SMS/call history(only for android phone)Ring reminder when your Android 2.3 or above smart phone receive a message (including Wechat， Facebook， Twitter，WhatsApp， Skype，and so on)Anti-lost alarm function: When cellphone left watch alarm automatically， after a certain distance to avoid lose the phonesRemote taking photo function:You can control your cellphone to take photo from your wrist.Altitude Meter，Passometer，Photograph， Barometer， VibrationMaterial: Steel + SiliconBluetooth Version: Bluetooth V3.0+EDRBluetooth Protocol: A2DP + HFP 1.5 + HS P 1.2Range of Frequency: 2.4GHz spectrumAmbient Noise: ?75dBTransmitting Range: ?10mLanguage Support: English， ChineseCharging Time: about 1 hourTalk Time: about 3 hoursMusic Play Time: about 6 hoursStandby Time: about 160 hoursPower Supply: Built-in 230mAh rechargeable battery Package: 1 x Bluetooth Watch1 X usb cable1 x User Manual Country/Region of Manufacture:China