Boss Audio - MR52B 5.25" 2-Way 150W Marine Full Range Speaker - Black - Pair - MR52B. 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 Watts MAX 75 Watts RMS Power Handling per Pair. 80 Hz to 20 kHz Frequency Response and 89dB Sensitivity. Polypropylene Woofer Cone and Treated Cloth Surround. 1" Tweeter Per Speaker. Sold in Pairs. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.