Cy•Fi is the world’s first wireless sports speaker for biking, boating, camping or any activity enhanced with a portable speaker. It is available in two models that support almost any music-carrying device: one is the ultimate iPod accessory, and the other supports Bluetooth-A2DP enabled cell phones, PDAs and MP3 players.
$199.95 for ipod and $179.95 for bluetooth via mycyfi.com