Features2.Support for Bluetooth hands-free telephone,convenient and safe on the phone.3.Support multipoint connections: can connect two phones at the same time.4.Support for Bluetooth 2ADP audio configuration5.Switch to hands-free mode automatically from music playing status when receives an incoming call6.With backclip7.With built-in microphoneSpecifications:1.Bluetooth version:V3.0 EDR2.Working frequency band:2.4GHz-2.48GHz SIM3.Specification:HSP and HFP protocol4.Standby time:up to 1000 hours/41days5.Talking time:10-16 hours6.Charging time:3 hours7.Charging voltage:DC 5.0v,500mA8.Support file format: MP3/WMA9.Transmit distance: 10mPairing:1.Using Bluetooth for the first you need to pair your mobile phone with this unit Activate your phones Bluetooth function then search new device.When the mobile phone detects this unit(named as CAR KIT Please pair and connect by using the original password 00002.In the music playing mode when there is an incoming call this unit will automatically switch to telephone modePackage Included:1xCar Bluetooth HandsFree Kit MP3 Player1x Car charger1x Data cable