Very good lights for the bicycle and very powerful..! The only downside is that you can't easily put them on and take them off to charge them.

Fantastic! Very good construction and VERY powerful light (VERY, it's perfect)! The only negative thing (let's call it negative), the only thing that bothers me is that the button to turn it on doesn't press very well and the other thing is that it doesn't come out easily to remove it, which for someone can be positive, because if someone tries to steal it, they won't succeed quickly, on the other hand, to be able to take it out yourself it takes a while and you're afraid of breaking it. Overall, very good, I would buy it again 100%.

19-11-23 Update. The red one broke and I haven't used it much.

Just like in the photos.
Small and quite powerful, they are hard to be seen. They come with 2 USB A -> micro USB cables, so you can charge them simultaneously.
Time will tell how long they last, but for now, with a month+ of use, they are great.
Edit: I will deduct one star for their battery... It is decent, but it could be much better. They last about 3 hours.