Olayer Multifunction 4-in-1 CAR G7 Bluetooth FM Transmitter with USB flash drives /TF Music Player ,Bluetooth Car kit ,USB Car charger Adapting professional-grade high-performance bluetooth Module Built-in mp3/wma decoder chip make it capable of playing the music flies in u disk, firing into the car stereo via wireless Easily enjoying the music and handsfree phone calls while you are driving This item not only support Bluetooth Handsfree call but also music play. FM transmitter mode: Stereo digital PLL locking