This is a Bluetooth Performance Speaker, the latest from SOUNDBOKS. Loud enough to fill a room or outdoor venue with huge bass, crisp treble and immersive sound for ~40 hours on a single battery. 
 
 Wirelessly Host up to 4 other SOUNDBOKS speakers in TeamUp mode for events and parties. Built for durability, transportability, and connectivity, the SOUNDBOKS can outlast, outmove, and outperform any speaker out there.