INSTEN FM Transmitter w/ USB/SD/MMC Slot Compatible With Apple iPhone 4 / 4S Play music from your SD Card, MMC Card, USB Flash drives, and your MP3 player devices. The easiest way to broadcast music from your iPod?, PDA, MP3 or CD player, and even portable DVD player. Transmits stereo quality sound from your portable music player to your car/home FM radio. Filter chips that won't interfere with your existing reception and produce clear crisp sound quality. Specifications: Broad frequency range of 206FM channels from 87.5 - 107.9 MHz;In Car Cigarette Plug Style (12V); Music import: SD Card, MMC Card, USB Flash drive, and music players with 3.5mm output.Supports MP3 files;LCD display shows volume, number of the song, and frequency. Accessory ONLY, iPhone?not included."Apple?iPod? iPhone? or iPad?are registered trademarks of Apple, Inc. Products are Apple?compatible and not endorsed by Apple, Inc.