Casio Calculator FX-991ES PLUS Scientist/Engineer

Designed and engineered for easy operation . Large keypad for comfortable use of the user. Both solar powered and battery powered according to the availability of light. It has a large display so that it is easy to read and use. Color coded keypad for easy key differentiation. It has a complete calculation feature with a full decimal system. Displays numbers in three digit separator formats (Standard, European, and Indian). It saves upto 150 previous calculations. All the mark-up capabilities of an adding machine for simplified cost and profit calculations.
Lightweight and easy to port.