How to get the hand crank technology closer to smartphone users, the ones who desperately need it? Attach it to their smartphone so that they can carry it all the time without even realizing. Ampware, an inventive company from Baton Rouge, Louisiana created an Indiegogo campaing for raising funds to …
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There are several devices on market which utilize the wind up mechanism. It can be used as a wind up battery charger, wind up flashlight, wind up radio, wind up clock, mp3 player, or a larger electricity supply unit. Usually there are hand cranks folded into the devices, which can be pulled out when needed.
