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4M Green Science - Potato Clock

6/Inner 48/Master 7.92Kg 4.60Cuft Item Size: 17cm x 22cm x 6cm Barcode: 4893156032751 What! No Batteries? Be a scientist as you discover how to power this digital clock using potatoes. Experiment to find out what other substances will power the clock – you’ll be amazed! Caution: High Voltage Inspiration and Fun!

S$16.90

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