Schmitt & Ongaro Deluxe All-Stainless Shorty Single Trumpet Horn - 12VDeluxe Stainless Steel Shorty Single Trumpet 12 Volt Dimensions: 13 1 2"L, 3 1 2"W, 4"H (35. 5 x 9 x 10 cm) Max Amp Draw: 4 Amps Rating: 114 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 It complies with ABYC specification A 23 and is suitable for ships