With increasing concerns about the soaring lndfills and the present trend for findng for alternative source of energy, here takes birth a calculator that is powered by water. The calculator has a built-in water reservoir, which once filled, can serve you for at least one month.



Thus, the lanfill is relieved from atleast three times of battery wastes, if simple batteries have been used in its place. With approximate dimensions 12cm x 9cm, the water-powered calculator costs £5.99.



Via: ecotopia 21629