Soundfly SD WMA/MP3 Player Car Fm Transmitter for SD Card, USB Stick, Mp3 Players (iPod, Zune) Transmits on all FM frequencies (88.1MHz-107.9MHz) - Memorizes up to 7 FM frequencies Simple plug & play - Powers on & off automatically or with button - Reads MP3 & WMA files USB port (reading data, not charging) & SD slot & 3.5mm stereo input - 3.5mm cable included for use with iPod, Zune, mp3 players Remote features: Folder shift - Fast Forward & Rewind - Repetition of defined Section- Shuffle - Bookmarking ID3-tag information via RDS: View song information on your compatible radio display.