Boss Audio 5.25 2-Way Full Range Marine Speakers MR52W 5.25 2-Way 150W Marine Full Range Speaker - White - Pair. 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 150