- Digital Clock with wires, copper and zinc strips, transparent tapes and more!
What! No Batteries? Be 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’ll be amazed! Caution: High Voltage Inspiration and Fun! Contains digital Clock with wires, pots, connecting wire, transparent tapes, copper and zinc strips and detailed instructions.
Price: $ 1.67