American Educational Blue Plastic Two Potato Clock, 8-1/2" Length x 3-1/2" Width x 2-3/4" Height

The potato clock is designed to demonstrate the principle of an electrochemical cell. The LED clock runs on 2 potatoes, oranges, grapefruits, lemons or cans of soda pop. Potatoes not included., Potatoes are great mashed, roasted, baked or in clocks, The potato clock is designed to demonstrate the principle of an electrochemical cell, The led clock runs on 2 potatoes, oranges, grapefruits, lemons or cans of soda pop.