Hydro Powered Calculator

Hydro Powered Calculator

Hydro Powered Calculator, a calculator powered by water an other renewable energy. Large 133 x 76 x 51 mm, is fed with 3 capsules of water that allow a range of at least 2 months. Once the water has evaporated due to internal chemical reaction, simply remove the capsule and will fill in the fountain. Hydro Powered Calculator on sale for $ 10.99.