The Dominator is a 12V dual trumpet electric horn that's contructed from stainless steel with a 304 nonmagnetic, painted white finish. Ideal for exterior use on boats fresh or saltwater, the horn's sturdy design will not rust. The Dominator is ideal for any 12V electrical system, does not require a compressor or hoses, and is maintenance-free. A stainless steel adjustable pedestal bracket is provided to prevent vibration. The trumpets are mounted next to each other for easy installation. Engineered for exterior use in almost any weather condition. Horn includes rubber gaskets, stainless steel mounting hardware, and instructions in English/Spanish. 8-amp current. 116 decibels. 330/408 Hz. 18-1/2"L x 8"W x 4-1/2"H.