Amazing light!!!I run this on the handlebars, but it will easily mount on your helmet with the supplied mount. This baby will light up the trails!! Have you ever seen a police helicopter with its searchlight full on? This light gets pretty close to that. You can also use it as a heater in the winter! During the summer it does run hot, but will dim if it starts overheating. This only happens when your stopped or going extremely slow. Battery life is as advertised. I also run the Stella 300 mounted on my helmet. Niterider also makes what has to be the brightest taillight I have ever seen, the CherryBomb. Highly recommended!