NEEWER Apple iPod iPhone Accessories. Wireless FM Transmitter with remote and Car Charger for Apple iPod Touch iPod Classic and APPLE iPhone 4. Full Range Frequency
As far a playing music, it worked great.  Have not found a ipod music player for the car that worked better.  However, when the phone was in the holder, all cell reception was lost.  I could not make or receive calls and even after the phone was removed, it did not show any missed calls.