Description
All you need to do is fill the reservoir with water and this clock starts working. Because the water is an electrolyte, it allows two metal pieces to act as a conventional battery. By adding a bit of lemon juice, you can help to enhance this process. The only maintenance required is to change the water periodically.
• Comes with a Teacher’s Guide
• Color: green
• CE certified
• Approx. 4″ (100 mm) W x 3.5″ (90 mm) H
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