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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+