Enjoy latest sound tracks or news updates with Griffin iTrip FM transmitter. This FM transmitter is compatible with both iPods & iPhones. With Smartsound button, you can adjust signal strength and with Smartscan get the best FM frequency. This Griffin 6343 iTrip FM Transmitter for iPod & iPhone is light in weight and incorporates track control buttons like Play, pause, forward and back from iTrip�s illuminating display.