The weather resistant indoor/outdoor wireless speaker from Brookstone is one speaker you would love to carry for your pool & rain parties.

Simply attach the 900 Mhz transmitter to your stereo system, MP3 player or your computer and start enjoying music anywhere up to 150 feet away. The speakers have built-in volume control buttons, so you can adjust volume without running back to the stereo player. The speakers also feature 'Phase Lock Loop' circuitry with three seperate audio channels that  keeps a clear audio signal and avoids interference with other cordless devices and can transmit through walls and ceilings.

Remember we said you would love to carry this outside? And there's one more feature that makes it more appealing - a Blue lighting that illuminates the wireless outdoor speaker for extra ambiance at night. Aint' that cool? These wireless indoor/outdoor speakers can powered by an AC adapter or 8 D-size batteries and includes a 5" woofer and 1" tweeter.  Grab one for US$ 150 from Amazon