Polk Audio Ultramarine 6.6" Coaxial Speakers - Silver. 6" Coaxial Speakers - WhiteThe Polk UMS66W speaker uses air suspension technology to deliver 150 watts of power in a sleek waterproof and UV/corrosion resistant package perfect for life on the water. Specifications for Polk Audio Ultramarine 6.6" Coaxial Speakers: Manufacturer: Polk Audio Color: Silver Quantity: 2 Water Resistance Level: None Size: 7 in Features of Polk Audio Ultramarine 6.6" Coaxial Speakers Watts Max: 150 Size: 6.6" Mounting Style: Flush QTY: Pair Waterproof: No Weatherproof: Yes Package Contents: Polk Audio Ultramarine 6.6" Coaxial Speakers Polk Audio UMS66SR: Ultramarine 6.6" Coaxial Speakers - Silver