Deluxe Stainless Steel Single Trumpet 12 VoltDimensions - 16-½"L, 4"W, 4-3/4"H (42 x 10 x 11.5 cm) Max Amp Draw - 4 AmpsRating - 118 db@ 1 MeterStainless Steel Horns All Stainless Steel Inside & Out 304 Stainless Steel inside & out including sealed sound unit No rust Guaranteed for 5 years. All meet ABYC A-23 for boats up to 12 meters Pre-wired Fits existing hole patterns