Logic3 Universal FM Transmitter with Car Adaptor 3.5mm Stereo Jack to allow use with iPod, PSP, & MP3 players Can be powered using 2 AAA batteries or Car Adaptor (supplied). This means you can use the Logic 3 FM Transmitter regardles of where you are. At the beach, on the boat- you'll always be able to share your playlists. 5 Pre-set Frequencies - 106.7Mhz, 107.1Mhz, 107.5Mhz, 107.7Mhz, 107.9Mhz Small compact design makes it easy to pack or carry in your pocket.