Features: General 12V Car & Motorcycle Horn delivers 120dB high decibel output with crisp sound penetration through noise, featuring erosion resistant metal construction for enhanced durability across various vehicles. Engineered with weatherproof aluminum alloy housing and shock absorbing components, this double tone horn maintains stable performances in 20°C to 80°C environments while resisting rust and shaking damage. Designed for motorcycle riders, city commuters, and automotive enthusiasts seeking stable auditory alerts without complex wiring or professional installation requirements. Optimized for highway safety scenarios, construction zones, and crowded streets where its 400 500Hz frequency ranges effectively cuts through mood noise to signals lane changes or emergencies warnings. Compact 100mm x 80mm dimensions enable seamless integration into most handlebar configurations or engine compartments, backed by IP55 rate waterproofing for year round roadworthiness in storms or snow conditions. Specifications: Component : metal Diameter: about 80mm/3.2inch Input electric : DC12V rate electrical power: 40W rate frequency: 510HZ Sound loud: 110db Package Includes: 1xCar Snail Tweeter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.