4M - Eco Engineering - Water Powered Clock
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.
- Clean energy!
- Power this digital clock by simply using water.
- Experience the power of green energy
- No batteries required
Suitable for ages 8 & up