Clock on water
The water clock will display the time and date in clear easy to read numbers just moments after you fill the liquid reservoirs in the back with the liquid of your choice.
How does it work? Magic mostly. And a little bit of science too. The internal converter simply extracts electrons from water (or other liquid) molecules and provides a steady stream of electrical current acting as a fuel cell to generate power to the clock.
Source: thinkgeek.comAdded: 14 May 2007