Pretty good rear bike light.
PRO: Nice and bright. Lots of blinking choices.
CON: Charge does not last very long. Tricky to mount and dismount from its holder.
Works well, and has a good variety of light modes to suit various light conditions. Eco flash is bright enough to stand out during daytime on overcast/rainy days. Side visibility is important, which this design accommodates well.
Won't fit beneath the seat if the seat is lowered too far due to the height of the light.
Nice bright light with a range of flash patterns. Excellent side visibility. I've owned knog lights in the past and been extremely disappoint with the band designs that broke and were impossible to fix, this is no longer an issue the cobber features a neat little bracket mount that uses regular black o-ring bands, perfect.
only negative is with charging and the mount. It is a little difficult to slide on and off the mount. Also, make sure it's plugged in correctly! It's easy to plug in the USB backwards and not get a charge. Learned that this morning!
If safety is important to you then this is the tail light for you.