Features: - The horn air compressor is equipped with large coils, providing stronger air pressure and fast response speed. Offers stable performance, easy installation, and compatibility with your car horn. The air pump assists the horn in producing a loud warning sound. - A reliable horn requires an air pump. Features an integrated design that is waterproof and sealed, allowing operation in freshwater or saltwater environments. Suitable for various weather conditions. - Upgraded motor with copper wire terminals and copper coil combination for improved conductivity, full power output, and enhanced performance. Compatible with most 12V vehicle horns. - The improved internal structure delivers a deeper and higher-pitched tone. Stylish and unique design, suitable for everyday use. - The air pump is easy to connect. Simply splice the positive wire to the original speaker wire or horn switch on the dashboard, connect the negative wire accordingly, and ensure the hose is properly attached. Voltage: 12V Current: 15A Output: 14 - 18 PSI Working Air Pressure: 0.08~0.12mpa Length: 4.3 inches Diameter: 2.3 inches Application: Air Horn for Car, Truck, or Vehicle Product Weight: 430g / 15.17 ounces Product Dimensions (L*W*H): 98*48*18mm / 3.86*1.89*0.71 inches Package Weight: 440.0g / 15.52 ounces Package Dimensions (L*W*H): 115*71*71mm / 4.53*2.80*2.80 inches Retail Packaging: Yes, Carton Packaging Package Includes: 1 x Air Compressor