Features: 1.Polished Shiny Chrome Horn: Designed for customers looking for a loud air horn, with a polished shiny chrome horn that cast a striking appearance on any vehicle mounted 2.Zinc Alloy with Chrome Plating: The air horn trumpets are made of good quality zinc alloy material with chrome plating, which greatly improves corrosion resistance 3.Include Basic Mounting Hardware: Electric trumpet horn is easy to install, the horn kit includes basic mounting hardware 4.Long Lasting Usage: Constructed of premium quality material to ensure maximum strength and durability for long lasting usage, and is designed to be weather resistant 5.For Various Vehicles: 135dB super lound sounds safety and clear. Fit for car, vehicle, motorcycle, yacht, boat, SUV, bike, buses, pick ups, ect. Specification: Item Type: Electric Trumpet Horn_x000D_ Working Voltage: 12V/24V_x000D_ Product Size: Approx. 450mm / 17.7in_x000D_ Diameter: Approx. 95mm / 3.7in_x000D_ Current: 4.0A_x000D_ Sound Level: 135dB_x000D_ Operating Air Pressure: 0.3Mpa-0.8Mpa_x000D_ Application: Suitable for 12V/24V car trucks boats lorry and all types automobiles PackageList: 1 x Electric Trumpet Horn3 x Fixed Screw3 x Nut2 x Rubber Gasket1 x Gas Nozzle Note: The product itself does not have an air pump. If there is no air pump, you need to purchase an air pump. When matching the air pump, be sure to remove the original horn on the solenoid valve, and then install the air nozzle and connect the outlet of the air pump.