Can you believe that a real time watching device, electronic machinery, yes, a real digital clock could be powered by a lemon? Get a Lemon Clock by Elenco to learn more about fascinating world of chemistry! Educational Toys Planet's Lemon Clock is a superb fruit clock science kit that allows your kids to conduct 18 experiments with LED, electro-magnetism, chemical reactions, acid/base substances, and invisible inksG and yes, put together a clock that will derive its power from a lemon. Lemon Clock is a unique combination of learning about science and having a just having tons of fun!