Broadcast your music. Transmits FM channels 88.1MHz to 88.9MHz. Adjustable LED frequency. DC cord to connect through your car. Music on the go has never sounded better. Play your iPod on an FM stereo receiver using stations 88.1, 88.3, 88.5, 88.7 or 88.9MHz. You can power your FM transmitter with 2 AAA batteries or through your car's cigarette lighter. Music on the go has never sounded better! Supports all type of portable audio/video devices - MP3/MP4 players, CD player. Requires 2 AAA batteries (not included). Includes a car adaptor for use without batteries. Apple iPod Touch, Apple iPod Nano, Apple iPod, Sony Video Walkman, Sony MP3 Player, Microsoft Zune, SanDisk Sansa, SanDisk Sansa Clip. Input for car adapter. Channel LED. Audio in line 3.5 mm. Power button/channel selector. DC car adapter. Made in China.