Power and play your iPhone or iPod on your car stereo thorugh AUX in or FM. The choice is yours. iTrip DualConnect is perfect for traveling when you don't know what kind of stereo your rental car will have. And Griffin's iTrip Controller app moves control onto your iOS device's MultiTouch display. Listen to all your favorite tunes on the go with the Griffin iPhone / iPod iTrip Auto FM Radio + Car Charger!