Good lights at a great price. I bought these to replace one of the two lights in my bike, but replaced both lights instead, for which I'm glad. They don't look like Xenon lights (not that they claim to do so, but some of you might have been wondering), but they are still bright. I would definitely buy them again. I've only run them for about 100 miles, so I don't know how long they hold up. So far, so good!