iPhone FM Transmitter 4-in-1 Car Kit - FM Transmitter, Charger, Holder - works with ALL iPod/iPhone The Wireless Radio Transmitter wirelessly transmits music from your iPhone 3G or MP3 player to your car stereo The tuner locks digitally into the clearest available radio station The cradle adjusts to almost any position. Keeps your iPhone 3G or MP3 player or PDA just where you need it to select the next play list and keep your tunes coming Convenient to use while listening to your favorite musics off your iPhone or MP3 player while resting on this holder that also functions as power charger through the car's cigarette lighter adapter The unit comes with a wireless remote that can be used to control the ipod functions