Perfect for a road bike where it's small size is crucial. Highest lumen setting and blinking feature are really the only usable options though. Light weight.

Great little light at a good price. Four stars because it is not removable from the mounting strap like the larger versions and recharging port is a little difficult to plug into.

I've been using this for about 5 months now. Here's what you need to know: - It's very well built. - It's pretty small, fits in your pocket. - It is rain resistant. I rode it through heavy rain dozens of times without any issues. - It's more than powerful enough for commuting/riding in a city. The beam is pretty good. I would want something stronger for night mountain biking. - It attaches with a rubber strap. It's very easy to mount/unmount and it stays in place pretty well. There is no separate mount that stays on the bike. - It charges via USB only. - I won't describe how to switch between modes here, but what you need to know is that it basically has 6 modes: low, medium, high, blinking, super low, and 34;locked34; (so you can't turn it on accidentally). Accessing the low/medium/high modes is dead simple. Accessing blinking or super low mode is annoying. Locking/unlocking the light (which is optional but handy if you put the light in a backpack) is very annoying. So why only 4 stars? Well I bought one, took it home, and it was dead out of the box - I think it didn't charge. I brought it back to the store and they replaced it with another that worked. I found that several other people on the internet had the same issue, or that it couldn't be recharged after some time. So I'd suggest you buy it from a seller that has a good return policy.