I chose this light because it has a hook mount, which I use to attach it to my helmet strap. The hook is very secure, it�s never come loose once in over a year of riding. Even though it�s small and light, it puts out a lot of light. I just bought a 2nd for my commute bike, where it mounts on the rack. I�ve had it on for many hours during long rides, it has never stopped working.
Perfect light output for the size. Mount is good and easy to use. The built-in clip works great with jersey pockets and the rear of saddle bags. Charges fast. Lasts several 1.5 hour rides before re-charging when using flashing mode.
Purchased to use on bike helmets (my wife and I). Have had numerous comments from car drivers on how visible we are and how much they appreciate the additional visibility. Terrific product. Btw, we also use garmin varia.