3-Mode Red Light LED Wheel Light for Bikes and Cars (1*CR2032)

Pros: Safer than just using your normal lights alone. It looks quite futuristic.

Cons: I can't really complain - it is pretty big, and not especially light - but it does what you want.

Other: This is a safety device, you should buy one because you like being safe. Get one for your kids, because you like them being safe.

Pros: Excellent for making sure you're seen from the side at night. They work great. Well made.

Cons: The only complaint is that 1 was blinking when I opened the package. The battery was a little weak but there was an extra battery in the package so not a big deal.

Other: If you want added visibility these will do it.
500? "Excellent for making sure you're seen from the side at night. They work great. Well made."

Pros: - Weights less than similar devices with "old-school" hard plastic cases.
- Outer shell made from silicon - it will never crack even after hard bumps
- Self-sealing: no water leaks between case and battery cover. (immersed in water for 5 minutes, 0.5 meter - no leak at all!)
- 2 strobe modes
- Tool-free installation. Can be mounted or removed in a second.
- Sits hard enough for medium XC tracks. Well, on the downhill track they'll possibly fly away just after start, but why you may need them during DH session?

Cons: - Incompatible with aero/flat-butted spokes.
- 4 of 6 devices had unstable contact between battery and contact pad, so even little bump was able to disable them (Solved by _slight_ bending pad toward battery with flat screwdriver).

Other: Looks soft. Works hard!

Pros: really good product good build quality easy to fit and easy to operate it just slips in between your spokes and you turn it on and off by pressing the center of the light

Cons: none that i can think of

Other: good light easy to use easy to fit

Pros: Easy to "install". Just insert it between the spokes and it will be there. I have used for a couple of weeks now and i have not had any problem with the fitting. Standard batteries CR 2032 which are cheap in 10-pack. The effect is good when the wheel turns and drivers should be able to spot you sidelong from a long distance. Here in Sweden it is very dark in the winter so this will come in handy, as a security measure.

Cons: Can´t really think of any, but of course you have to remember to turn the light of, although i havent been forced to change the battery yet.

Other: Everyone who travels on a bike in the dark should hav a couple of these. It is a cheap life insurance.

Pros: The light is strong, the batteries are long-lasting, and you've got three light modes to choose from. They're waterproof. This is a great thing, because they adjust pretty low on the wheels, so they get splashed often, and might even be fully submerged at times during normal riding. The covers that protect the electronics are hard to remove, so you don't risk them falling off any time you hit a bump on the road.

Cons: They're a bit too easy to remove from the wheels, so they might be stolen without much effort. The on/off button is quite hard to press, particularly if you're wearing gloves.

Other: These are amazing, guaranteed to get people's eyes on you... which is exactly what you want at night. If they don't see you when you've got these on, they simply weren't looking.

Pros: - Strong light - batteries are holding out (~3 months of use) - three light modes - waterproof !!! - good value for money

Cons: - turning ON/OFF is not so easy, espcially for kids - placment is a bit tricky and could be improved

Other: I would probably buy them again