With the help of this MP3/WMA Wireless FM Modulator you can listen to MP3 and WMAfiles in your car via an SD or MMC card slot or USB flash memory! This 3-in-1 in-car cigar style FM modulator supports 15 FM frequencies and has an SD/MMC card slot and a USB port so you can listen to your MP3/WMA files on the road! Simply plug into your car’s cigarette plug, turn on your car stereo and tune to the same frequency! Plug in an SD/MMC card, USB flash drive, and even an MP3 playerand listen to your favorite music on the go! The LCD displays the volume and name of the song!