The Bosch 18V Lithium-Ion Power Box use the industry's most advanced lithium-ion technology for greater battery life and more run time, all in a lighter package. Surround yourself with premium 360-degree stereo sound with the Deluxe version of the Bosch PB360D Power Box 360 job-site radio, which offers a high performance, weather-resistant system that produces up to 50 watts of sound output. The innovative 4-way speakers plus integrated subwoofer create a high quality sound that projects in all directions at the same time. The PB360D includes such step-up features as a SIRIUS satellite radio port, 4-way GFCI power outlets, a remote control, and backlit control panel. It's also available in a standard version (model PB360S) that excludes these features.