There’s no stopping the steady flow of hand-crank powered gadgets. And why would anyone want to stop that, it’s fun and good for the environment.
The product name of the Wind-Up Keychain LED Torch ($8) pretty much says what it’s all about. Unfortunately, there’s no information about how many minutes of power XX minutes of cranking will give you.
Anyway, it looks like handy little tool to bring along in the camping backpack.