A portable Bluetooth speaker with incredible acoustic performance, the BRV-X/2 boasts an 18-hour playtime for all-day adventures. Its massive passive radiator 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 in.