Deluxe Stainless Steel Shorty Dual Trumpet. 12 Volt. Dimensions: 16"L, 7-1/2"W, 4"H (40.5 x 19 x 10 cm). Max Amp Draw: 7 Amps. Rating: 120 db@ 1 Meter. Stainless 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