Review on Stay Safe While Cycling With G Keni Smart Bike Tail Light - Auto On/Off, Waterproof, USB Rechargeable, And Ultra Bright LED Warning Back Bicycle Flashlight! by Michael Hicks

I like the light. I like the ambient light sensor and the extra time it gives me between charges. I like the inertial stop light. It is bright enough and has enough choices to find a light pattern that works. The power switch is an absolute piece of junk. If you have large fingers with blunt tips, forget about pushing them into the recess the switch resides in as they won't fit. When you find something that will fit and is not sharp enough to damage the switch cover, good luck finding the magic spot that does something. It took me over 5 minutes to turn it off to charge yesterday. Luckily I found the sweet spot and got it back on in only a couple of minutes. I hope I got the finicky switch, but maybe not.