Stainless Steel Single Trumpet Electric Boat HornAFI brings the Stainless Steel Single Trumpet Electric Boat Horn, made for smaller vessels in mind. The exterior is constructed completely from stainless steel while the diaphragm is made of type 304 stainless steel to ensure your boat horn holds up to harsh marine environments.Features: 12 Volt; Max Amperage Draw : 3.5 Amps; dB Rating: 108 at one meter; Fundamental frequency: 420 +\- 20 Hz; Dimensions: 14" L x 3.5" W x 4" H; Stainless steel exterior; Type 304 stainless steel diaphragm;