SUNDELY 24 Volt Chrome Plated Zinc Alloy Solo Single Trumpet Air Horn + Compressor for Boat Truck Train Car Vehicle 24 Volt Chrome Plated Zinc Alloy Solo Single Trumpet Air Horn + Compressor for Boat Truck Train Car Vehicle Overall Dimensions: 17.7"L x 3.9"W x 3.9"H (45cm x 9.9cm x 9.9cm), Trumpet Lengths: appr. 16.9"(42.9cm), Trumpets Bell Width: appr. 3.9" (9.9cm) DB output: 150 db (+/-5db), Input Voltage: 24V Main material: Chrome plated zinc alloy, Colour: Silver (Chrome Plated) Suitable for Trucks, Cars, Boats, all Types automobiles and motorcycle