The PDWR53 5.25" Indoor-Outdoor Waterproof Speakers (Pair) from Pyle-Pro is intended for use on boats, marine settings, decks, patios, poolsides, or any other setting where moisture or water are present and could otherwise damage traditional speakers. It offers a 5.25" long throw woofer and a 0.5" high polyamide tweeter. Other features include a 40-ounce magnet structure, a rugged plastic enclosure, and spring-loaded "U" mounting brackets. This unit includes (2) speakers.