The Potato Clock uses a pair of ordinary spuds to power a digital clock.
This kit includes a digital clock, wires and prongs; two potatoes are all that's needed to create a working clock.
This kit is ideal for young science enthusiasts, and offers a valuable lesson on the transformative power of green science.
Detailed assembly instructions included.
No batteries required.
Challenge your child's imagination with 4M toys and kits.
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4M offers a wide range of toys and kits to let you build a clock, crochet a placemat, or turn your room into a planetarium--all in the name of making learning fun.
See more product details 7 years & 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.