Pump up any party with the ultimate ears hyperboom bluetooth® speaker. It's ipx4-rated to be splash-proof, making this wireless speaker great for pool parties. The rechargeable battery keeps your music going for up to 24 hours. One-touch controls allow you to play, pause, and skip tracks, and adaptive eq automatically customises your sound to the space. Speaker features bluetooth® technology up to 24 hours of life on the rechargeable battery music-sharing feature delivers incredibly booming bass and crystal-clear sound adaptive eq automatically customises the sound to suit the space spill-proof, splash-proof design with ipx4 rating