Ah, summertime. Hot dogs, baseball, beer, bikinis, submersible pool speakers. Yeah, we said that. This speaker, called the Weatherproof Submersible Wireless Speaker (bonus points for creativity, guys) from Grace Audio is good for up to 9 feet of underwater music fun. The turtle-like unit connects to any music source up to 150 feet away, runs for about six hours on a single charge, and will set you back around $149 with additional speakers for $99 each. Up to ten speakers can be chained wirelessly for the ultimate sub-surface disco bash.