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!