This Sea Safe Air Horn is a must-have for smaller boats. Made with a solid brass trumpet and chrome plated finish, it's non-corrosive and ideal for use in salt or fresh water. Measuring 9-1/2" x 3-1/2" x 3-3/4", it's available in 12 or 24 volts and comes with a heavy-duty compressor, rubber gasket, relay, and stainless steel mounting hardware. It fits most makes and models and is sold individually. With its durable design and practical features, this air horn is a reliable choice for any boater.