The Kensington LiquidFM for iPod FM Transmitter lets you enjoy superior sound while you listen to your iPod tunes using your vehicle"s FM radio. Plus, the built-in charger recharges your iPod while it plays. Tune to any FM station from 88.1 to 107.9 along with being able to have three station presets for instant tuning. It features an on/off switch to avoid vehicle battery drain.