Aqua Sounders is the latest wireless floating speakers from Grace Digital Audio, which is designed specifically for your hot tub, pool or bathtub. This water-resistant speaker features a pair of Ultra Bright LED Mood lights night play, up to 6 hours non-stop music using the batteries (sold separately) and listen to a range of 150 feet. The set also comes with the transmitter, which works in most audio sources, and able to ten additional speakers at once. Aqua Sounders Retail $ 149.99.