Customer Rating: 
Summary: Great buy!
Comment: These little lights are gems...comes with battery and easily clips on your bike. They are super bright and have 3 settings.
Customer Rating:
Summary: Simply Amazing!!!
Comment: handy, easy to install, and you can even use it while walking or jogging at night!!! Great buy I must say!!!
Customer Rating:
Summary: bike rear tail light
Comment: Works great and have lasted over a year on one battery. Battery is a watch style and mounting is simple. Rear red light is bright and noticed in the dark of night. Liked them so much, have ordered for the kids bikes. Great price and they are water resistant.
Customer Rating:
Summary: Good Safety Lights
Comment: These are a little bit smaller than what I had expected but does it's job for one of our adult bikes. It came with 3 bracket mounts, I believe they're all different sizes. I used the two bigger ones. One was too big, but it also comes with 3 rubber rings to put inside the brackets, so when I used one of those it fits fine. All you need is a philips screwdriver to get them on.
Customer Rating:
Summary: Bright white
Comment: These lights work well, seem to be sturdy in construction and one battery seems to last quite a while. I'm very pleased with them but I couldn't give them 5 stars due to the design of the white light.
I had been using them for about a week and had to take an extra early ride in to work. It was my first when it was dark out. When I turned on the white light on the handlebars it shone in a wide arc, over 180 degrees up and down and left and right. I couldn't see because the light was shinning in my face as well as everywhere else.
A piece of black tape on the top part of the light and I was soon on my way. An easy fix to this if it happens to you.
Still riding with it and it is still working well. It's getting a bit darker every morning this time of year.
As other have noted this light shouldn't be counted on to light your way in the dark (I usually ride on lighted streets) but it will make you much more visible to others on the road.
Summary: Great buy!
Comment: These little lights are gems...comes with battery and easily clips on your bike. They are super bright and have 3 settings.
Customer Rating:
Summary: Simply Amazing!!!
Comment: handy, easy to install, and you can even use it while walking or jogging at night!!! Great buy I must say!!!
Customer Rating:
Summary: bike rear tail light
Comment: Works great and have lasted over a year on one battery. Battery is a watch style and mounting is simple. Rear red light is bright and noticed in the dark of night. Liked them so much, have ordered for the kids bikes. Great price and they are water resistant.
Customer Rating:
Summary: Good Safety Lights
Comment: These are a little bit smaller than what I had expected but does it's job for one of our adult bikes. It came with 3 bracket mounts, I believe they're all different sizes. I used the two bigger ones. One was too big, but it also comes with 3 rubber rings to put inside the brackets, so when I used one of those it fits fine. All you need is a philips screwdriver to get them on.
Customer Rating:
Summary: Bright white
Comment: These lights work well, seem to be sturdy in construction and one battery seems to last quite a while. I'm very pleased with them but I couldn't give them 5 stars due to the design of the white light.
I had been using them for about a week and had to take an extra early ride in to work. It was my first when it was dark out. When I turned on the white light on the handlebars it shone in a wide arc, over 180 degrees up and down and left and right. I couldn't see because the light was shinning in my face as well as everywhere else.
A piece of black tape on the top part of the light and I was soon on my way. An easy fix to this if it happens to you.
Still riding with it and it is still working well. It's getting a bit darker every morning this time of year.
As other have noted this light shouldn't be counted on to light your way in the dark (I usually ride on lighted streets) but it will make you much more visible to others on the road.