Cruise on your boat with your own personal soundtrack blasting all around you on the Polk Audio MM1 Series 5×7 Inch Coaxial Speakers. These speakers are ultra marine certified for total waterproof design. They’re the premium audio upgrade your boat craves with studio quality . total sonic accuracy. Meticulously conceived . designed . and engineered for advanced high quality sound . you’ll love hearing every beep . tweet . and twang in your music.These speakers also come with 2 sets of mounting hardware and 2 wiring harnesses so you can hook them up and start blasting your tunes around the lake right away.