Bests & Worsts Reviews from Amazon

This horn is simple to operate and mount, and like other reviewers have said, it is loud. I was initially worried about blasting my own ears given the 110 db claim, but it does the job of alerting drivers without hurting your hearing. I am skeptical of the decibel rating, and I intend to test that claim with my sound level meter. It does the job I bought it for, namely to produce an audible alert that can be heard by drivers inside motor vehicles in the midst of traffic. The button on top of the unit selects the next of 5 sounds, while the button at the end of the coiled wire activates the horn. I have recorded a short video where you may hear all 5 sounds. The camera was enclosed in a waterproof case, which muffled the microphone somewhat. The construction is mostly plastic, but this horn is after all rather inexpensive, and the plastic also makes it lightweight. The mount is secure once installed, and it is easy to clip it in and out to take it with you if you want. I mounted mine upside down since I already have a lot of gear on my handlebars, and my thinking was that an upside down mount may protect this horn somewhat from damage in the event of a bicycle crash.