YSMART is a lightweight LED mini flashlight available in a variety of different materials including copper or titanium and has been specifically designed to be an everyday carry (EDC) flashlight you ...
Most commercial LED flashlightsuse three AAA or AA batteriesin series that produce 4.5V. The batteriesthen drive four white LEDs that connectin parallel. These LEDs can workat voltages as low as 2.7V ...
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