Powerful indeed, but it is very bulky (although it does not appear in the photo).
I would say it is difficult to use while driving, as you have to move your hand quite far from the steering wheel to press it. Especially if you have gears after the handles

The noise is loud, similar to that of an alarm. It takes 2 AAA batteries, I have put alkaline ones and they last a long time.

A cheap solution in cases where the electric horn/bell is broken.

mediocre. It takes 2 AAA batteries and its sound is like an alarm. Many people don't realize that it's a cyclist and don't pay attention

It came to me in white color instead of black.
Strong noise with a sound like an alarm.
I also put a tyre up to sit more firmly on the base.