1-Piece design, that requiers no hoses Installs in minutes by simply transfering the factory air horn to the compressor Produces a powerful dual tone air horn sound that is 3 times louder than the factory horn The sound chamber has also been engineered to allow the user to clean any road dirk or dust, without any special tools Compact in size to fit any car, truck, motorcycle and any 12-volt vehicle that wants a loud air horn sound 123.5 Decibles @ 2 meters Includes mount bolt and 30 amp relay