150DB 17-inch (450MM) 12V Car Air Horn - Single Tube Air Horn Super Loud Modified Horn This 150DB 17-inch (450MM) 12V car air horn is a professional-grade modified horn designed for car owners who pursue high performance and unique sound effects. It not only has super sound output, but also provides impressive sound quality, ensuring that it can be clearly heard in various environments. Main Features Ultra-high decibel: Reaching an ultra-high decibel of 150DB, ensuring clear communication even in noisy environments. Large size design: The 17-inch (450MM) large size design provides deep and powerful sound effects. Single tube structure: The single tube design is compact and easy to install, while ensuring the concentration and penetration of the sound. 12V power adapter: Compatible with standard 12V vehicle power supply, easy to install and integrate into existing electrical systems.