Dual trumpet horn 12V 150dB for cars with copper coil compressor1、The horn inside is made of high quality metal for more strength and durability. Ideal for almost any weather condition, tough enough to withstand the any weather and form of elements of blizzard. 2、The air horn fits on any 12 volt DC power vehicle, such as car, truck, SUV, motorcycle, boat, off road vehicle, buses and so on to better meet your demands. 3、Equipped with good air pump, high‑quality air compressor, comprehensive upgrade of motor, enhanced turbine cavity, chrome‑plated shell, all copper terminals. 4、The air horn is easy to install, flexible and portable, with the reflexes to take from one car to another easily. Wiring is easy and won't take you long at all. 5、Chrome plated zinc trumpet, all-copper coil, the metal trumpet and compressor are weather resistant, all kits are designed to serve for a long time, enough for everyday use. 6、Unique breathable design , warmth and strength. Super‑loud 150dB sound can not be really ignored, the sound could spread a far distance, please do not use it near school or hospital.