The Superflash is, indeed, a bright taillight. If you get one, use a ziptie or rubberband to attach the light to the clip. Mine flew off when I went over a bump in the road. Having read many a review since, I don't believe this to be an isolated problem. I was in a paceline at the time and wasn't really in a position to stop. So, I lost the light on my third ride with it. When I talked to Performance about it, they told me they could only give me a refund if I returned the light. Uh, that was the point in needing a refund in the first place. I use a Blackburn light now.