Boss Audio MRGB55B 5.25" Marine Speakers w/RGB Lighting - BlackMRGB55B 5. 25" Marine Speakers with RGB Lighting Black Fully Marinized is the term we use for our Marine and Outdoor products that are Weather Proof. We integrate high tech, state of the art waterproofing materials plus special UV coatings for plastic surfaces, coated circuit boards and connections to protect the product against the harsh outdoor elements and resist corrosion. Features: Weather Proof Full Range 5. 25" 2 way Speaker Pair Lighting