All Land Networking Car FM Transmitter MP3 Player SD/MMC Slot USB Port Pendrive Wireless Car FM transmitter modulator for Mp3 player, pendrive, SD MMC card slot. Built-in FM transmitter. Support frequency range from 87.5MHz-108MHz Built-in LCD display, which shows frequency you are playing. Built-in SD/MMC card slot. Support SD/MMC expansion card(Max capacity of 8GB). Warranty: 30-day money back & 1-year guarantee!