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Time is simply the light movement. This device adopts ancient concept that the time is measured by the movement of the sun light. We utilize Brightness LEDs powered by battery on a set of rotary device, to emit orange light on flat surface (like the wall or ceiling in house) to display the time. Since no hour-hand and minute-hand are required, this device is mainly the rotary set itself, it becomes a portable clock and you can simply stick it on any place whatever you want.
Chi-Tai Hsu Dai-yang Lin