The Digital Wireless Radio Transmitter wirelessly transmits music from your iPhone or MP3 player to your car stereo. The digital tuner locks digitally into the clearest available radio station. Wide choice of channels allows you to tune your car stereo to the clearest FM frequency, and enjoy your music with full stereo sound and convenience. Note that the charging function of this FM 8-in-1 is compatible with iPhone 3G! This has specifically been tested to work with iPhone 3G. This unit is compatible with following models: Apple iPhone 3G - Apple iPhone first generation - Apple iPod Touch - Apple iPod Classic/Video (all models) - Apple iPod Mini - Apple iPod Nano (all models, including 3G) - Apple iPod Photo