Rechargeable 12-hour battery, dual drivers & 10W output, and an IPX7 waterproof rating. The BOOMBOX 3 Pro is a powerful, lightweight speaker that packs an audio punch. With dual drivers, 10W output, and a 12-hour rechargeable battery, it offers crisp sound and reliable performance. This wireless speaker is also IPX7 waterproof and durable enough to handle outdoor exposure.