Good light for the price
I've had this light for about a a year now. Its decently bright for night riding, but you would want another light with it for use in totally unlit areas. A fast rider can out ride this light, especially down a hill(think 20+mph). The battery life is pretty good and the mounting is pretty easy. I most often use the daylight flash mode, which is awesome. It really makes drivers see you. For a sub $100 light, you're not going to do a lot better. Also, for a few bucks more, you can find this light with a kit that includes an extension cable and helmet mount. I added a pic that gives some idea of the size.