CASIO fx-991ES 2-Line Display Scientific Calculator

The CASIO fx-991ES Scientific Calculator is a powerful, high-performance tool engineered to handle complex mathematical challenges. It features a clear 2-line display that shows formulas and answers simultaneously, along with a built-in STAT-data editor for effortless statistical analysis. With 240 advanced mathematical functions and a reliable dual-power system (solar and battery), it is an indispensable asset for high school, college, and university students.