High Voltage Inspiration, the Green Science learning range teaches science, conservation and sustainability with fun.Contains Digital Clock with wires, copper and zinc strips, transparent tapes and moreAges: 8 yearsYou may know potatoes as a good source of potassium, but did you know they can be used to power an alarm clockNo batteriesBe a scientist as you discover how to power this digital clock using potatoes.Experiment to find out what other substances will power the clock!You will be amazed!Create many unusual batteries with apple, tomato, soft drinks and more!This kit contains a digital clock and the instructions and everything you need (minus the spuds) to run it.Recommended Ages: 8 and up