Features: 1) Reads MP3 / WMA file from the USB flash disk directly and broadcasts through the car FM tuner 2) Frequency / track 3) Two optional play mode: normal and random 4) Line-in function that enables you to enjoy music from the external audio device 5) 14 preset channels within 87.7 ~ 88.9 and 106.7 ~ 107.9MHz 6) Car cigar socket power supply (12V DC power) 7) USB1.1/2.0 compatible 8) Transmitter with USB jack 9) FM channel