Wheelbrightz LED Bicycle Wheel Lights – Bright, Colorful Light for Bikes – Fits Front or Rear Tire – Weather-Resistant Tube with Battery Pack – for All Ages

Had these for a few weeks. Very bright and great for riding at night. Will buy again for the back wheel.

I ordered a 2 pack of purple lights but I've received 1 pink one and one purple one. I've also had Tue issue that the battery box plastic strap has snapped 4 times and is almost impossible to fix if you're out at the time.

I got these for my boyfriend. So I originally ordered these from Amazon marketplace and by comparing the box I got to the genuine box photos, it was pretty obvious that I received knockoffs. Amazon was really good about refunding my purchase after I complained. Unfortunately, it looks like these keep getting sold by a series of slightly sketchy importers, using shifting names, and I don't fully trust that anyone selling Wheel Brightz under this listing is selling the genuine article. So I bought a new set of Wheel Brightz from the manufacturer's website. I am super bad at mechanical stuff, but installation was OK. Maybe 15-20 minutes per wheel. I got the pink one, my boyfriend got the multi-color. They both look great. The multi-color version looks kind of ugly when you're stationary compared to the other, more uniform colors, but it's totally sick when you're actually on the bike in motion -- it's like having a little rainbow whipping around your rim. For thirty bucks you bring a lot of joy to the world -- we probably average one direct compliment for every 1-2 miles or so of biking, depending on pedestrian density (and I overhear a lot of people talking about the lights but not directly to us). Typical encounters: A little kid in Bernal Heights shouted "you have a cool bike!" from his front porch. A (probably slightly intoxicated) pedestrian in the Mission told my boyfriend he had the coolest bike in San Francisco and gave him a fist-bump. Another stranger shouted, "I like your Playa bike!" (this is not my Playa bike, although these lights would be perfect for Burning Man.) The lights are very bright and visible, although you still need to have standard front and rear lights, as the Wheel Brightz can't be seen from directly behind or in front of the bike. Update: A year later, I still haven't had to change the batteries! I have had to order one replacement power supply for my boyfriend's bike, though -- we hang our bikes vertically by the front wheel on wall-mounted hanging racks and over time, the power cord got caught between the wheel and the rack enough times that it frayed and wore through. (You can avoid this if you are reasonably careful when you hang up your bike and avoid crushing the power connector cable -- it just hadn't occurred to us that this would be a problem until the cable broke, so we didn't bother trying to avoid it.) More recently, a segment (about a quarter) of the lights on one of his wheels went out, although you can't tell when the bike is in motion. Again, this is probably caused by hanging the bike by the front wheel. Update II: I've gotten several more sets of these, and they're still great, but I notice that in some of the sets I've bought more recently, in the initial packaging, the battery pack is screwed on so tightly I've had to use an electric screwdriver to open it -- it would be nice if they could fix that and not over-tighten the screws! Update III: I recently brought a pair of these to Burning Man. I noticed on the Playa that of all the different lighting schemes people used for their bikes, Wheel Brightz were the brightest and most visible -- far better than EL wire or front and rear lights. If you are planning to go to Burning Man, I would recommend Wheel Brightz as an absolute must-have for your bike.

These lights are super cool, we’re often outside with neighbours and with the sun setting earlier now, they make our son easily spottable to cars. His friends think they’re super cool too. These are also great for camping so you can easily spot your child on the campground. They turn on and off easy. Installation was a bit of a pain, but worth it. It’s hard to get a good picture as my son is always flying around on his bike, but ones attached so you can see how bright they are.

Everything works great, except for the fact that I have a relatively large steel mount for my rear wheel brake. So the battery pack mount slightly - very, very slightly - grazes the steel mount for the brake. The friction is fractions of a millimeter, and has only caused a very slight abrasion on the battery pack mount surface. This has turned out to not be a problem at all, even at speeds above 45 km/h which I occassionally bike at. Just remember to check and tighten all the battery pack screws after every trip - they do become a bit unwound with distance, on both wheels. Other than that, the product works amazingly well and is extremely cool. :D