Ok, we are all used to different types of calculators powered by batteries, solar powered etc. In fact most of people nowadays, don’t use calculators, but cell phones for simple calculations.

But for all calculator lovers, we have a type of calculator you haven’t seen before. It is powered by water, and here it how it works:

Just add water or any other electrolytic liquid into its fuel cell and the chemical reaction between its zinc anode and cathode produces an electrical current that will power this Water Calculator for a month before it needs another sip.

Great idea, wonder if it can be implemented in some other devices?

The price is $19.99 at Computer Gear