Scosche BoomBottle+ Rugged Waterproof Portable Wireless Bluetooth 4.0 Speaker - Dual 360-Degree 12 Watt 50mm Speakers with Subwoofer and Indoor/Outdoor EQ Functions - Black/Space Gray. Great sound wrapped in a sleek frame. Equipped with dual 12W 50mm drivers, the integrated omnidirectional diffuser channels music in all directions, creating 360 degrees of immense sound. A large passive subwoofer housed in a tuned and ported enclosure delivers incredible bass. Boost your music in loud environments.