CSJ Pulse Wireless Waterproof Bluetooth 4.0 Shower Speaker Supporting high definition Bluetooth 3.0 audio wireless connectivity. Answering a simple phone call by the press of a button with the built-in Mic for easy two-way communication. High-quality loudspeaker with bass,impacting your sense of hearing. 400mAh high capacity allowing enjoy music indoor and outdoor for 6 hours without charge and a 3 hour charging time. Don't let the water stop you from enjoying your favorite music, its a great companion for beach, poolside, on boat, shower room, bathtub, or kitchen