Cute Sunlight Green Science Potato Clock Kit(Multicolor)

You May Know Potatoes As A Good Source Of Potassium, But Did You Know They Can Be Used To Power An Alarm Clock. 7 Years And Up. The Two Potato Clock Allows You To Generate Enough Electricity To Run A Digital Clock Using Potatoes Just Push The Zinc And Copper Electrodes Into The Potatoes Causing An Oxidation/Reduction Reaction That Is Converted To Low Voltage.