Kit Projuect Potato Clock

You can generate enough electricity to run a digital clock by plugging electrodes into common potatoes! An amazing chemical experiment which also works with tomatoes, lemons, apples - even soft drink or beer! All parts (except fruit/veg) supplied including:

highly accurate digital clock module
Metal electrodes, wire
Instructions and fluid beakers
Perfectly safe for children and highly educational. (Do not eat fruit/veg after using as batteries)
Recommended for ages: 10+