Imagine being able to simply control a car/motorcycle horn on your bikeŚ If only there was a way to honk at reckless drivers who bullied and fled during rush hour! The unique car-powered Bike Horn 4.0 is not only the loudest bike horn, it's also your safest riding bet! 90/120 dB CarWindow penetrates the horn sound familiar to people in the car and red light passersby! OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.