The keychain-sized Lumen generates its power with a small thermoelectric generator (TEG), which uses contrasting temperatures to generate an electrical current. The upper section of the TEG leeches ...
SureFire first announced its blindingly UB3T Invictus torch back in 2010, but it took until now for the company to get its 800-lumen flashlight out the door. As a point of comparison, the massive ...
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