Favourite BikerZ Dog Horn Features Loud and funny dog horn Works with 12V Current Extra Loud air pump sound Adds fun to your daily ride in crowded traffic conditions Cannon barrel shaped enhances looks of the vehicle Fits easily and firmly with help of the included metal plates. Horns with No Separate Mini Motor FEATURES: 1. Just like Old Time(Vintage) Car "OOOGA" Sound 2. Easy Installation on Reverse Side 3. Fixes with 1 Screw Only 4. Overall Smaller Dimension.