- High performance audio upgrade that delivers signature quality sound that goes beyond OEM factory systems - Marine certified with IP65 rating (water- and dirt-resistant) and tested for salt-fog, UV and humidity - Polypropylene and UV tolerant cone with waterproof inner and outer surrounds - Simple drop-in installation for any vehicle including cars, boats, ATVsyou name it - Zero tweeter protrusion and reduced mounting depth for a precise fit - Dynamic Balance technology offers a rich, clean, full-range sound - , 20mm Tweeter ensures clear, balanced mids and highs - 100 Watts at Continuous Power; 300 Watts at Peak Power Everything you love about Polks Dynamic Balance technologythat rich, clean, full-range soundis built into the marine-tough, yet ruggedly sophisticated, DB+ series. And with its universal fit, it can be installed in any vehicle: Automobiles, motorcycles, boats, ATVsyou name it.