Hydro Clock!

Hydro-Clock is the green time machine! No batteries required, it's powered by....water. In fact, it runs on almost any liquid, water, juice, soft drinks, see what you can try to make it run. This amazing environmentally friendly clock is completely safe, pollution free and keeps great time.

How does it work? The internal converter extracts electrons from the fluid molecules and provides a steady stream of electricity to generate power. Don't worry, complete instructions are included so your future scientist can read all about it!