Item Type: Air horn Material: Metal Quantity: 2pcs Voltage: DC 12V Current: 7A Treble Frequency: 435Hz Bass Frequency: 335Hz Sound Output: 110db Application: Cars, trucks, motorcycles, boats, and all vehicles with 12V Package List 2 x Electric Air Horn 2 x Gasket 2 x Nut 1Super Loud : Super loud 110DB sound. The circular design enhances the sound warning effect. The sound could spread a far distance, please do not use it near school or hospital. 2Wide Application: Designed for exterior mounting on any 12V vehicles, trucks, boats and motorcycles etc. in a fresh or salt water environment . 3Durable Material: Made of highquality metal, the metal terminal design has better conductivity, more corrosion resistance and longer service life. 4Integrated Design: Unique coated metal body, integrated design is more waterproof, make cars more unique and stylish. 5Installation Method: Single screw, blade type terminal contact, easy to install. 12V power supply, no external air source is required.