The Pyle PLMR57 Speakers are waterproof and designed for use in your boat, on the dock, by the pool, or simply mounted outside. They're designed with rust-proof mesh covers for quality protection. The PLMR57 is a pair of 100-watt, 5.25" two-way, full-range speaker suitable for marine use. This speaker is equipped with a polypropylene cone with cloth surround for accurate sound reproduction. The molded ABS plastic basket keeps your sound distortion-free.