I found them to be a little small as they were almost half the size as the original light my bike came with.
The light came with two AAA batteries already in and ready to go.
There is a big soft blue button on the back side of the light that is very easy to find.
I found the light to be much brighter than the original light my bike came with so at that point, I did not care about the size anymore.
Mounting:
It came with a rear rack mount as well as a seat post mount. Installation to the rear rack mount was very simple and took about 5 minutes. Although I didn’t need the instructions, the images are very straightforward.
3 settings:
Steady, “Superflash,” and Courtesy.
-Steady is just the light at 13 lumens without any effects.
-Superflash is a flashing or strobing light at 13 lumens.
-Courtesy is a pulsing light that goes from 4 to 11 lumens.
For people who ride with daytime lights, I can’t say the light is really noticeable in the daytime but it works as a reflector. It may be more noticeable on cloudy days or maybe early in the morning or evening.
*This light DOES NOT turn off automatically after a minute of being stationary so you do have to manually press the button on the rear to turn it off and on.
Waterproofing:
The light is rated at IPX3 (protected against water spraying at a 60 degree angle) and has a rubber or silicone gasket so although not completely waterproof, it should be fine in the rain. I personally live where it doesn’t rain very often so I’m not too worried about it.
Overall, it seems like a good sturdy light. I often ride on bumpy roads so I would like to see how well it holds up in the long run.