At a shade under £30 you wouldn't expect this to be race ready - and it's not. But the round, open face of the light means that it does look like it should be brighter than it is. The low-power beam has a dark centre spot with progressively blue and yellow rings spreading from it, so you're not going to strap it on the bars and trust it to get you down anything trail wise.
But it is extremely light in weight, which means that it won't break your neck if you use it on your helmet and it's easy to use. So if you're looking for a budget priced secondary light source to supplement the light you run on your bars, this would be okay.