The electric air horn can produce up to 130DB pleasing tone for any weather condition,which makes it a good safety companion while driving,Bigger coil,better material,stronger air pressure give the air horn louder;durable,65 manganese steel,All-copper coil,This dual trumpets air horn works on any 12V system vehicles,fit most cars,SUV, Motorcycle, Yacht, Boat, off Road Vehicle, Buses ,easy to install
