The Griffin 6235 road trip FM transmitter for iPod and iPhone enables you to play your iPod or iPhone through the car radio and simultaneously recharge the batteries of the iPod or iPhone whilst driving. Your iPod or iPhone is kept in position with a steel cradle. The Griffin 6235 comes with EasySmart Scan and Grifffin SmartSound to locate the best radio signal. Griffin exclusive up front controls to improve fingertip control. Plus the free iTrip controller which uses your Multi-Touch display to control RoadTrip's tuning.