*The PA Power Horn Driver is designed to amplify sound & make it audible over a wide area; making them ideal for outdoor & indoor settings. *The 65 W Power Horn is made with heavy-duty ABS that can withstand natural pressure and tolerate rough outdoor use. It can resist wear and tear effectively. *5 Core Waterproof Siren horn is designed to be weather resistant; making it suitable for use in various weather conditions. *The 5 Core PA Power Horn Driver system is simple to use and can work well with modern and older hardware without sacrificing performance.