Play your iPhone or iPod through your car stereo system with the Belkin tunebase FM. It will also charge your device as well as providing a USB port to enable you to plug in another device at the same time. It also boasts a handsfree function for making phone calls on the move. Easy one button call pick up will allow you to hear phone calls through your car speakers. Case compatible, no need to take out iPod/iPhone before docking.