According to Wikipedia, “An air horn is a pneumatic device designed to create an extremely loud noise for signaling purposes”. Nowadays, air horn can make a super sound for inspiring and heart-stirring cheer, is a kind of noise maker for outdoor sports and party cheering.

It is said that air horns originated from Vuvuzela, which became very popular in South Africa. Vuvuzela is made of tin. To blow this horn, the lip and lung strength of the blower has to be strong to make a sound like a foghorn or an elephant. Later, it is improved and became the plastic version that makes a loud monotone sound, but still need to blow with our mouth. Excitedly, now we don’t need blow the horn with our mouth. Because the portable air horn is coming. It is a kind of air horn with an aerosol can and a plastic horn, portable and light.Portable air horns are also readily available packaged with a can of compressed gas as the air source. A total set is composed of a metal or tin can, a valve, a nozzle, a cap, a plastic horn and so on. What’s more, it can play huge and more high-pitched sound by pressing the nozzle. Through visual sense and the sense of hearing, it can effectively push the joyous activity to the climax. They won’t take up a lot of space. 

Our handheld air horn can be regarded as the tool of precaution and the signaling, especially in boating, camping, sporting events, and lifeguards. This handheld air horn is small enough to carry in your hand when walking for safety. However, it carries an efficient sound to alert other boaters or the Coast Guard to your location. So it is also a kind of marine air horn.