Discover how to power a digital clock using the energy hidden within the humble potato. This kit allows you to recreate a classic experiment and learn all about the science behind how batteries work. And if you want to take your new career as a scientist to the next level, try experimenting with other fruits and veggies - just be sure to record your findings! Comes with a pair each of zinc and copper plates, along with wires attached to a digital timepiece, a connecting wire, clear tape, and detailed instructions. Potatoes not included. Ages 8 and up.