Casio fx-991ES Plus BU 2 Scientific Calculator

The Casio fx-991ES Plus BU 2 is an advanced scientific calculator featuring Natural Display technology that shows mathematical expressions as they appear in textbooks. This non-programmable calculator offers comprehensive mathematical functions in a sleek blue design with a high-resolution display. Key features: • Natural Textbook Display shows expressions as they appear in textbooks • Over 250 built-in mathematical functions • High-resolution LCD screen with dot matrix display • Multi-replay function for quick formula recall • Plastic keys designed for easy operation • Basic mathematical and statistical functions • Comes with protective hard case The calculator features a 10-digit mantissa plus 2-digit exponential display and includes functions for trigonometry, statistics, calculus, and engineering calculations. It supports fraction calculations, combination/permutation operations, and has 9 variable memories. The device is powered by both solar and battery backup, ensuring reliable operation in any lighting condition. Its compact dimensions and lightweight design make it highly portable for academic and professional use.