ION Water Rocker Waterproof Floating Speaker System for iPhone/iPod: * Stereo, wireless speaker and transmitter with 100" range * Perfect for pools, hot tubs, lakes or bringing to the beach * Fully waterproof and submersible * Add up to 10 speakers from a single transmitter * Transmitter with 1/8" jack for connecting iPod, iPhone or other audio devices * Built-in FM radio