Accessories Digital Wireless Automobile FM Transmitter + Car Charger + Holder/Dock + REMOTE for iPod Touch Classic Nano 3G Compatible with iPhone 3G (Remote for Fm transmitter only) Using the iPhone, you can talk to anyone hands-free style through your car's speaker system! **NOTE: IPHONE/IPOD NOT INCLUDED** adjustable mounting holder for ( iphone 3g 3gs , iphone 4 , all generation ipod , ipod touch , mp3/4 , or most cell phone & mobile device ) to lock on in place for easy viewing If you want to listen to digital music simply place your iPod or MP3 player onto the holder, tune to any station and enjoy crisp, clear audio. FM Frequency 88.1 - 107.9 MHz. Input: DC 12V, vehicle power Type A USB socket for charging mobile phone, GPS, and other devices! Remote control is convenient for you to play / stops the music, adjust volume, and skip to next / previous songs!