The Logic3 Universal FM Transmitter can be used with iPod, MP3 or portable audio players. It allows you to listen to your audio device through any FM radio or FM car stereo wirelessly. Powered using 2x AAA batteries or the Car Adaptor (included), it can store up to 10 common FM stations, which can be changed at the touch of a button for the clearest possible signal. The Universal FM Transmitter also has a backlit LCD for frequency, time & temperature displays and can transmit to any FM frequency between 87.6Mhz to 107.9Mhz. Included is a USB charging port to recharge USB MP3 players. The Universal FM Transmitter is an absolute must-have for any iPod or MP3 owner.