I bought it looking at photos with a speedometer, the product I received had nothing to do with it, it didn't even have a screen, only illuminated letters (bike light). I had it for about a year and suddenly the siren started ringing at one o'clock at night and didn't stop, so I broke it.

I bought it for the light, which is powerful just as I wanted. It is very easy to apply on the handlebar and the light and horn.
The only disadvantage I can say is that the sensor for recording kilometers, which needs to be placed on the front wheel, has a relatively short cable, resulting in it not reaching on a folding bike like mine.