The DMR113 delivers great sound in a compact size. This allows you to link up to 10 speakers, all playing audio from one mobile device. Creating ultimate wireless surround sound. Delivers rich stereo sound from two powerful 3 inch side-firing speakers and a powerful 25 watt subwoofer. The DMR113 is engineered to stand up against harsh job site conditions with protective bumpers, features dust and water-resistant construction for increased durability, giving it an IP65 rating.