Air powered super loud! Two (2) chrome metal trumpets produce a sound that is sure to be heard. Ideal for the vehicle owner that wants dress up chrome under the hood. Easy to install in any 12 volt vehicle. AIRSPLITTER is also the horn of choice of motorcycle owners, it will make a great looking addition to any bike. So if you want a HIGH POWERED SOUND, TO BE HEARD then AIRSPLITTER is the horn for you! Comes complete with all mounting hardware. Instruction in English / Spanish.