WISHERTOY พลังงานมันฝรั่ง
5241828
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Potato clock kit that works using vegetable electrolyte power. Make a unique timepiece using vegetable power. Explore natural green energy found all around us. Learn how simple batteries and circuits work. Kit Contains: Digital clock, wires, pots, transparent tapes, copper and zinc strips & detailed instructions. Colors and contents may vary from those illustrated and no vegetables/organic matter are included
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