[Product Information]

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• Developed by Middlesex University in the United Kingdom!
• Make your own mud clock: this clock really works without any batteries!
• No Batteries? No problem! Think like a scientist and use this kit to power a digital clock with nature.
• Contains digital clock with leads， flower pots， copper and zinc strips， screw driver， wire， connecting blocks， and detailed instructions.
• Great gift idea， presented in gift box.