The Renewgoo GooBoom portable bluetooth speaker brings it with monstrous bass and bold design. IPX7 fully waterproof and portable, this powerful speaker pumps out massive sound all day and all night. Renewgoo GooBoom keeps your friends dancing and its built-in powerbank keeps your device charged. So you can groove from dusk till dawn and keep going strong! Powerful GooBoom Sound and Monstrous Bass: Get the loudest, most massive GooBoom sound on our most powerful portable boombox speaker.