Well first off, don't get the
Pulsar II LED light.
It turned itself on in my pocket and the next time I checked, the light was so dull I could not read the words on a paper. I have only had it for about 4 days too.
So a specific warning against that particular type of keychain light.
Also a general warning to check any type of light to see if it can switched on in a pocket or such. Avoid ones with crappy buttons like the Pulsar, perhaps consider a proper torch.
Bah, what a waste of $25.
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"Travel is fatal to prejudice, bigotry, and narrow-mindedness."
"He who strays discovers new paths."