Deluxe Stainless Steel Single Trumpet. 24 Volt. Dimensions: 16-1/2"L, 4"W, 4-3/4"H (42 x 10 x 11.5 cm). Max Amp Draw: 2 Amps. Rating: 118 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