2PCS 300db Super Train Horn For 12V Power Supplies Car-boat Motorcycles Automotive Loudspeaker Car Speaker Sound Signal P4N0 Feature Dustproof CoverReduce dust particles entering the horn, avoid affecting normal operation, and extend the lifespan of the horn 300DB Super Loud:Snail horn has an internal reflow design with a loudness of up to 300DB, which can give you a loud and clear sound to warn others and keep you safe behind the wheel. Easy to Use: The high woofer is equipped with brackets and screws, and the reasonable combination of equipment makes it easy for you to install. Universal Fit: Waterproof horn decoration is widely used in cars, motorcycles, small yachts, some trucks, go-karts, SUVs, buses and 12V power cars SpecificationVoltage: 12VFrequency: low 410HZ high 510HZHz Sound level: 300 dBmaterial: ABS+metal Package Contents:1/2 pcx Electric Snail Horn+dust cover1 bag installation accessory