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The Q-Beam I used plugged into the cigarette lighter in my truck. I did a lot of eye-search shining, driving for miles in the back-country jeep trails in the desert.
I guess that mine might have been 2nd generation. They later came out with a one-million candlepower version.
A Streamlight SL 20, 20,000 cp, shines eyes at a quarter-mile, easily. Easy to ID a critter at a couple of hundred yards.
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