Hornit dB140 bicycle horn with two sound modes: a piercing 140 dB “road” mode and a lower-pitched 121 dB car horn sound for cycle paths. Features a remote trigger for safe use while braking, a Garmin-style mount for quick install/removal, and is fully weatherproof (not submersible). Fits any bike.

I bought this horn during a bike trip in Asia to stay safe around wild animals. Now that I’m back in Europe, I’m happy using a regular bell again, so I no longer need it.
It’s incredibly loud – as claimed by Hornit, probably the loudest bicycle horn on the market. After 3 months on the road the batt...