The Casio MS-88ECO is an environmentally-friendly desk calculator with both the upper and lower case made from recycled plastic. This model has a large and clear 8 digit angled display is powered by eco-friendly solar energy combined with a mercury-free battery. Functions include Tax, Currency, Mark up, correction key, 3 Digit comma markers and auto power off. The display is tilted to give an easy viewing angle. For use at home or at work.