CoolThings : It’s not the most powerful torch light in the world, but it just might be the most convenient. Called Lumen, the tiny flashlight’s LED bulb is designed to power using your body heat. Simply put a finger on the designated area on top and the device can draw enough heat to keep itself powered to light your way in the dark.
That’s right, it’s a torch light that shoots out a beam with no batteries, no solar panels, and no hand-cranking. As long as you keep a finger on top of the case (and you aren’t wearing gloves), it should switch on and stay lit, giving you a convenient, portable light that can never run out of power.
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