The makers of the cy-fi, claim that it is the first ever wireless speaker system for bikes. This ipod compatible system can be mounted on the bicycle frame and has battery life of approximately 6 hours. The speakers can also function as a remote control for your mp3 player.
Snip from the site:
Slightly larger than a deck of cards and weighing less than 3 ounces – cy-fi’s incredibly compact design is the first revolutionary product of its kind to be introduced to the cycling world. Portable, and easily mounted on any bicycle mainframe, cy-fi enables users to enjoy all of their digital music, offering unprecedented sound quality and battery life, while eliminating the safety concerns associated with headphones or earbuds when riding. It can also be used as a travel speaker and comes with a desk stand charging stand.
The cy-fi is expected to go on sale during the first quarter of 2008. The suggested retail price is $149.95, not too bad if you ask me.