This is one of best gadgets I've bought. It's really working as it should. Light is pretty bright to be useable and once power is drain you just use a crank and charge it.
After I've tried first one, ordered 6 more to give as presents to friends, and everyone liked it.
Previously i used similar keychain which charged from sun, they died pretty quickly(not very green) and was harder to maintain, this one could be charged anytime including time when it's really need, no matter it's day or night.
And one more good thing, it have a switch which make it possible to turn it on when needed and leave, no need to keep your finger pressing the button.
Crank may not look solid but so far I didn't break it.
I keep it on my keys as it's small enough to be used as keychain flashlight.
The homeless in my town live in a wooded near the highway. I bought a dozen of these nifty little lights so they'd be visible and have some illumination for inside their tents. The reaction I got was startling. They LOVED these tiny little lights, and not needing to spend scarce resources on batteries was pretty good too. LOVE em!