Technuv CarG7 LCD Bluetooth Car Charger FM Kit MP3 Transmitter USB Handsfree Mobile Product Description This product is a special Bluetooth car charger mp3 player along with a professional high-performance Bluetooth Module. Built-in mp3/wma decoder chip that can transmit music files inside the USB disk to car stereo via wireless. Besides, during the Bluetooth , you can play the phone's music and FM transmitter through the Car Audio, which is also perfect for accepting incoming calls as it automatically switches to the speaker's state, call end then automatically back the music player once the call is disconnected Easily enjoying the music and answer the call in hands-free mode while you are driving, which ensure the driving safety while enjoying music.