Bluetooth car FM transmitter with MP3 player, car charger and TF slot.
Adopts professional high-performance Bluetooth module;
Built-in MP3 / WMA decoder chip;
Can transmit the audio files in USB flash drive or TF card to car audio system; Also can send the music in your phone to car audio system through Bluetooth;
Will switch to hands-free state and will switch back to playing state after calls end.