A portable Bluetooth Speaker with incredible acoustic performance, The brv-x/2 boasts an 18-hour playtime for all-day adventures. Its massive passive resistor thumps with loud, booming bass, and its waterproof, shockproof design can handle your toughest adventures. It even floats! Want more sound? Pair two brv-x/2 speakers together for wireless stereo pairing. And when your device is low, charge up with the USB charge out.