I guess this is automotive related, it is certainly where it's used. For those not familiar, it has a 4 position switch with 4 FM channels that you can select. This will broadcast your ipod (or anything that uses the 3.5mm headphone jack, such as portable DVD players or laptops) on any one of those 4 stations. Belkin Model F8V367. Comes with batteries and owners flier. Used it maybe twice, just over a year old, works fine, but I don't need it anymore. $10+ shipping.