Meet the Loud Mini: a bicycle horn that sounds like a car horn, helping you get other people’s attention on the road. It mounts on your bike and lets you alert people loudly with just the touch of a button. It has a rechargeable battery that lasts up to 4 months. It weighs less than a pound. Loud Mini has a weather resistant design.
The above video gives you a better idea how the Loud Mini horn works. More information is available on Kickstarter.