The In-Car FM Transmitter and Charger allows you to take your iPod on the road whilst keeping your iPod full charged. The In-Car FM Transmitter and Charger will allow you to play your iPod through your FM car stereo speakers. Recharge your iPod by connecting the Charger to the cars power source, no batteries are required. You can store up to 10 common frequencies used or switch between 88.1Mhz to 107.9Mhz FM frequencies at the touch of a button for the clearest possible signal. You can also connect other portable audio devices such as MP3 players, MiniDiscs and Portable CD Players via the 3.5mm Stereo connector.