The Water-Powered Calculator
The latest green innovation isn’t a solar-powered battery – it’s a water-powered battery! This calculator runs off a unique battery that uses moisture to activate energy-producing carbon particles. The battery produces the same amount of energy as an alkaline battery, but the fact that it’s made from carbon means that it’s not toxic. To charge, just fill the battery with tap water and the calculator can be operated for two to three months. You’ll never have to buy an alkaline battery for this calculator!
This innovative calculator is available in bulk quantities at epromos.com. It makes a great promotional item for eco-friendly businesses.