Mini Compact Dual. 12 Volt. Dimensions: 3"L, 8"W, 1-3/4"H (7.5 x 20.5 x 4.5 cm). Max Amp Draw: 6 Amps. Rating: 112 db@ 1 Meter. Standard Horns. 304 Stainless Steel Trumpets, Diaphragm and Mounting Brackets. Meets ABYCA-23 for boats up to 12 meters. Pre-wired. Fits existing hole patterns. Much louder than competitive models