4M | Eco Engineering - Water Powered Clock
Grasshopper
$34.00
Just add water and magic -the clock begins to work! Build this water-powered clock and learn about how batteries work. Contents: Clock frame, water container, clock module and rear case, zinc strip, copper strips, wire, electrode holders, screws and details instructions. You will also need (but not included) a small crosshead screwdriver, table salt and sticky tape.
Features:
- Clean energy!
- Power this digital clock by simply using water.
- Experience the power of green energy
- No batteries required
Suitable for ages 8 & up
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