Introducing the Fusion MS-FR4021 4” 2-Way Marine 120 WSpeakers, perfect for those who crave high-quality audio while out at sea. These speakers were designed for marine use, ensuring they can withstand harsh weather conditions and saltwater exposure. With a brand name like Fusion, you can expect top-of-the-line sound quality and performance. These speakers are ideal for use in boats, yachts, and other aquatic vessels. The compact size of these speakers makes them easy to install and allows for versatile placement options. Elevate your boating experience with the Fusion MS-FR4021 4” 2-Way Marine Speakers. Used very little, almost brand new! Small speakers, big sound Fusion's MS-FR4021 4 marine speakers pack a lot of tech into a compact design. The heat-pressed poly cones feature German CURV technology, which uses a woven fiber composite that's heat-pressed to form a lighter, stronger cone. When combined with titanium dome tweeters, the result is a high-performance 4 speaker that sounds great and is built to last. Technology and value A boat is a rough place for speakers. Heat, humidity, salt, spray, and high-pressure hose-downs at the dock can shorten the life of any speaker that's not built for life on the water. These marine speakers meet the toughest standards for UV stability and salt/fog resistance. Rigorous testing ensures that they're ready to rock, even in the extremes of a marine environment. The water-resistant design complies with ASTM standards for UV stability and salt/fog resistance, so your MS-FR4021 speakers will perform at their peak even after prolonged exposure to the elements.