FM transmitter with adapter charges your iPod while broadcasting songs through your vehicle's FM stereo. Choose any FM frequency for cleanest signal. Lock in up to 10 of your favorite stations with memory button. Pass-through 30-pin connector allows use with other iPod accessories. Offers no power switch. Easily plugs into iPod. FM transmitter with adapter features 60-second auto off, high-stability crystal oscillator and phase-locked loop control. Requires no batteries or software.