i Trip Auto is the most advanced i Trip ever. i Trip Auto combines Griffins renowned FM transmitter technology with an integrated charger that plugs into a cars cigarette-lighter or accessory socket. As with all. Griffin products, setup & operation are quick & easy. Press the Smart Scan button & tune the car radio to the frequency i Trip chooses for you. Its that simple. (But, of course, you can also select frequencies manually.) Other features include inline remote controls, assignable presets, stereo & mono play modes, & Smart Sound signal adjustment. Add app integration for iPhone & iPod touch with. Griffins i Trip Controller app, a free download from the i Tunes App Store. Compatibility iPhone iPhone 3G/3GS iPod Nano 5G iPod Touch 2G iPod Classic iPod Nano 4G iPod Touch 1G.