I am not sure what your expectations are with these. I don't know what they look like when I ride the bike. I read some reviews the other day and some people were not happy with them because they didn't come on easily. Mine come on if you barely move the wheel which I thought before reading the review was a bit annoying, but mine come on easily so they work just how they are supposed to. I don't know how much light they really give off or how visible they really are. I didn't buy these they were something I took off a bike I flipped in the last week or so after I took a bunch of stuff of of it. I figured I would put these on and hey at least I have valve caps on that bike. LOL I would say they are more toys than legit lights. I don't think I would pay money for them and I don't know how long the batteries will last either. I assume there are better options of other products that attach to your spokes or light them up for the same amount of cash IDK. For say $5 get them if you want, but $10 I would shop around for something more exciting that will be more flashy pun intended. =) I have a set of blue ones that I forgot I even had that came on my Diamondback Vertex. They sat around too long and I don't think they work anymore. They are fun though I know a guy that was excited to put his on his road bike once I finished fixing it up for him.

Look on ebay for spoke lights for something to compare them too. I might have to order one of the cheap ones just to try them out one of these days.