Griffin Technology iTrip DualConnect for iPhone and iPod touch Transmits Wirelessly To Car Radio Or Directly Through Aux Charges iPhone Or iPod Touch While Driving Smartscan 1-Button Setup Finds The Best Open Fm Frequency 2 ways to use iTrip: transmit wirelessly to your car radio, or directly through AUX Charge your iPhone or iPod touch while driving SmartScan one-button setup finds the best open FM frequency for you User-programmable presets save the best frequencies for quick recall AUX port for clean audio connection to your car stereo's AUX-in jack