Product number: 4893156032751 View all 4M KidzLabs > View more: Construction Kits > 4M KidzLabs - Green Science - Potato Clock Make your own potato clock with 4M Kidzlabs Green Science - Potato Clock. Potatoes just for eating? Not at all! Awaken the scientist in you and discover how to make the included digital clock work on potatoes, and without using batteries! Experiment to your heart's content, because besides potatoes, there are many other natural resources you can use to perform this experiment, such as a lemon, an apple, a glass of cola, or a tomato. Product specifications Green Science - Potato Clock - Clock Item description Green Science - Potato Clock Item number 4893156032751 Version Clock Occasion Birthday, Sinterklaas, Christmas Hobby Crafts & Drawing Suitable for ages 4-7 years, 8-12 years, 13-17 years, Adults Country of origin United States Box dimensions: 17 x 22 x 6 cm Contents: Digital clock Pots Transparent tape Copper and zinc strips Detailed instructions Environmental information about Green Science - Potato Clock Green Science Green Science teaches children the principles of renewable solar, water, magnetic, gravitational, and wind energy and builds a cool, clean machine that works! Green Science construction kits teach young engineers to use the principles of physics to build their own gadgets, robots, and cool devices. The 4M Green Science series allows children to discover the wonders of physics and chemistry.