The irock! 300W wireless music adapter lets you listen to any portable music device over any FM tuner and speaker setup, without a clumsy or constricting cable hookup. It's the perfect way to simply and efficiently listen to MP3s, CDs, minidiscs, and other formats in the comfort of your car or living room. Just plug the irock! 300W into the headphone jack of your portable device, tune your radio to one of four preselected frequencies (88.1, 88.3, 88.5, or 88.7 FM), and crank up your tunes. The irock! 300W's operating range (limited by FCC regulations) is 10 to 30 feet, depending on environmental conditions and the quality of the FM receiver.
The tiny (1 by 2 by 3 inches), lightweight (2.5 ounces) irock! 300W is powered by two AAA batteries (not included). It features a simple on-off switch on the front and a red LED that lights up when the unit is on. It comes with a six-foot flexible antenna that folds into the irock! 300W to protect its plug when not in use.