iTrip broadcasts the music from your iPod to an open FM frequency so you can listen to your tunes through the nearest FM radio. Use it with car radios, boomboxes, or your home or office entertainment system.This design update for iTrip features a new, brighter high-contrast display, easier to read in any light. Griffin-exclusive SmartSound technology optimizes the FM signal sent to your receiver, for the best-quality sound possible.