Wagan SmartSound MP3 USB FM Modulator with FM Transmitter is the easy way to transmit music. This modulator allows to play all audio devices and USB flash drives wirelessly through the car stereo system. The multi-function remote control lets you select songs from the USB flash drive. This unit has a built-in MP3 decoder and plays MP3 files from the USB flash drive. It has full FM range from 88.1 MHz-107.9 MHz and has 11 program equalizer settings.