Posts tagged wind up

GiraDora is a $40 human-powered washer and spin dryer, increases efficiency and improves the experience of hand-washing clothes.

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.