Colour black brand sony sony srs-xb31 portable wireless bluetooth speaker - black totally dust/waterproof - with an ip67 rating, the xb31 speaker can be taken anywhere you dare to go! It'll keep on playing no matter how dusty the surface gets, and if it gets dirty, just rinse it off! It will also survive a submersion in water. Totally wireless - bluetooth and nfc connectivity make it simple to stream your party list, and with a battery life up to 24 hours, it can last even longer than you! You can even connect up to 100 wireless speakers with bluetooth! A total party - with flashing line and strobe lights that sync to the beat and the extra bass feature, your party will be the talk of the town. The xb31 has a fun sound effect feature: tap the speaker in different places to make different sounds! Total control - control the party from the dance floor with the sony music app - select your favorite playlists, cue the next song, change the lighting patern, or alter the sound effects!