Our Hydro Powered Clock is fun and educational! The water-powered batteries consists of two electrodes made of special alloys, which, when immersed in water, activate the carbon particles to produce energy through a chemical reaction. Behold the power of science! Seriously, I'm glad there are people researching this stuff because it might only be a clock today, but it could be powering a house this way tomorrow.
The hydro batteries produce the same amount of energy as normal batteries but they are made of carbon, which is everywhere, that uses less energy to produce and are non-toxic. Electricity is created through conductivity by water to operate the LCD clock without use of batteries and BAM!, you have a working clock! Simply refill the battery as the water evaporates, typically every two to three months. We dont recommend trying the tongue lick test on these batteries.
Measures 2 inches tall x 3 inches long x 3 inches wide.