iTrip Auto combines Griffin's renowned FM transmitter technology with an integrated charger that plugs into a car's cigarette-lighter or accessory socket. Setup and operation are quick and easy. Just press the SmartScan button and tune the car radio to the frequency iTrip chooses for you. It is that simple. (But, of course, you can also select frequencies manually.) Other features include inline remote controls, assignable presets, stereo and mono play modes, and SmartSound signal adjustment. Add app integration for iPhone and iPod touch with Griffin's iTrip Controller app, a free download from the iTunes App Store. Key Features - FM transmitter technology - Integrated charger - Plugs into a car cigarette-lighter or accessory socket - Quick and easy setup - Select frequency manually option - Inline remote controls - Assignable presets - Stereo and mono play modes - SmartSound signal adjustment - iTrip Controller app for iPhone and iPod touch