Feature 1Stainless Steel Material: Made from high strength stainless steel, the dual trumpet horn ensures long term stability and reliability, and can withstand prolonged use and high frequency operation. 2150dB Loud Sound: The dual air horn features 150dB volume, the loud warning sound emitted from 2 different sizes of stainless steel horns can be heard from miles away. 3Enhanced Safety: With such a strong sound, the dual trumpet air horn can be the most effective and safest way to alert others to your presence, ensuring overall safety. 4Versatile Use: This car air horn is designed for long lasting use and superior sound performance, ideal for vehicles, trains, trucks, boats, yachts, lorry and all types automobiles. 5Easy Installation: The train dual trumpet is easy to install, can be connected through basic car electrical systems, allowing you to disassemble it from a car to another, simple to install and operate it on your own. Item Type: Dual Trumpet Air Horn Working Voltage: 12V/24V Size: Approx. 645 x 160mm / 25.39 x 6.3in, 585 x 160mm / 23.03*6.3in Current: 4.0A Sound Level: 150dB Operating Pressure: 0.05Mpa-0.08Mpa Fitment: Suitable for 12V/24V Car Trucks Boats Lorry And All Types Automobiles Package List 1 x Dual Trumpet Air Horn 22 x Installation Accessories