Describe:: 1.[Super Loud] The air compressor and larger coil can make stronger air pressure, which makes the dual horn produce louder and clearer sound. 2.[Alloy Material] The car dual horn adopts high quality zinc-aluminum alloy material, hard, wear-resistant and corrosion-resistant for long service life. 3.[Dual Trumpets] The dual trumpets are designed for customers who are looking for loud and affordable air horns with 600dB sound level, stable performance and higher working efficiency. 4.[Easy Installation] Our trumpet speaker kit is very easy to install. You just need to connect the wire on the straight screw terminal to the original speaker wire or the horn switch on the dashboard. It also comes with a universal bracket to make installation easier. 5.[Wide Application] The dual trumpets are compatible with 12V system, can be used for SUV, motorcycle, yacht, boat, off-road vehicle, bus, train, etc. Specification: Name: Automobile Metal Conjoined Air Compression Horn Material: plated zinc Voltage: 12V-24V Power: 48W Diameter: 75mm/2.95in DB output: 600dB Impedance: 8 (Ω) Diaphragm material: 65mm/2.56in Waterproof grade: IPX 6 Type: Car snail horn Sound level: 120±5(db) Current: 15 (A) Size: 215x75x75mm/8.46x2.95x2.95in Gross weight: 900g Parts List: 1 PCS* Dual Trumpets 1 PCS* Fixing Screw Kit Note: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 2. Please allow slight dimension difference due to different manual measurement. Thank you for your understanding.