uxcell&reg; DC 12V 30A Dual Air Horn Kit Trumpet for Train Car Truck Boat Product Name : Vehicle Dual Trumpet Horn;Voltage : DC 12V;Power : 30A Sound Range : 110 5dB;Short Trumpet Size : 16 x 7cm/ 6.3" x 2.8"(L*D);Long Trunpet Size : Long Trunpet Size 21 x 7.5cm/ 8.3" x 3"(L*D) : 21 x 7.5cm/ 8.3" x 3"(L*D);Compressor Size : 11 x 6cm/ 4.3" x 2.4"(H*D) Material : Metal, Plastic;Color : Black, Red Net Weight : 680g;Package Cotent : 1 x Dual Trumpet Air Horn,1 x Compressor,Mounting Accessories