LED display LINE audio inputIndependent Bluetooth start /shutdown button Support playing music by US B disk Support MP3/WMA music format Answer /hang up/reject/redial via Bluetooth Bluetooth stereo music playCall Echo Cancellation and Noise Reduction(CVC)Dual USB output voltage, provides power to other devices up to 5V/2.5AAutomatic memory function of power failure frequency pointDisplay of on-board battery voltage

This product is a special Bluetooth car charger with MP3 player, adopting professional high-performance Bluetooth module, built-in MP3/WMA decoder chip that can transmit music files of the USB disk to car stereo via wireless, and can switch an incoming call to the hands-free state as long as your mobile phone is provides with the Bluetooth function. When the call is finished, it will be switched to the music play automatically.