Casio MS-88ECO Mini Desk Calculator

For use at home or at work, the environmentally friendly MS88ECO desk calculator helps protect our environment. It comes equipped with a casing made from recycled plastic and is powered by eco-friendly solar energy combined with a mercury-free battery.
The features include: square root, sign change key, 4 constants (k), 3 digit comma marker, 4 key memory, tax calculations, key rollover, currency conversions and a correction key