It`s called a LED flashlight.
I have one of those:
It’s called a beeber...
I like how LED flashlights work, and how long the batteries last while they’re setting around waiting for me to use ‘em. I *don’t* like how there’s no meaningful way to easily compare the output of LED, CF, and incandescent home lighting. So much for “nanny state”, they can’t even officiously regulate right. I suspect that has something to do with the anemic output of LED replacements for various AC lighting. Walmart was blowing out an LED desk light ($5) that normally sells (at Target for example) for around $15 — and not surprisingly, none of the floor samples I’ve seen at ANY store are plugged in to compare with real desk lamps.