FM Transmitter with 206 channels optional :87.5-108MHZ; - Supports 12-24V voltage..1.4"Large screen display white words on black background; - Supports folder switch & 4 loop modes.Supports USB disk & SD/MMC card; - With remote controller...Line-in function supports other devices:Ipod,mp3/4 etc....Suppots MP3 format files; This is a neat little FM modulator that plugs into your car’s cigarette lighter. Equipped with a 1.4” screen, line-in function, and SD/USB input, it’s capable of playing MP3s in all sorts of formats. Hook up your iPod, or plug in a USB stick with your favorite music. The FM transmitter operates on over 200 different channels from 87.5 to 108 MHz, so you’ll be able to find the perfect station for streaming your music. The screen displays relevant track information. Includes a fully functional remote control.