Take Your Tunes on the RoadListen to MP3sPlay music stored on your MP3 player through your car"s FM tuner. It"s simple using this lightweight transmitter with an easy-to-read display.Easy to UseJust plug into your player"s headphone jack and you"re ready to go. The transmitter comes with a 12-volt car adapter to keep TuneCast Universal powered while you drive. An adhesive-backed bracket makes for easy mounting to your car"s dashboard.