The Casio FX-991ES Scientific Calculator is a reliable and feature-rich calculator built to handle a wide range of mathematical, engineering, and scientific calculations. With 417 built-in functions, it supports fractions, algebra, trigonometry, statistics, matrices, vectors, complex numbers, integration, differentiation, and equation solving, making it an excellent choice for secondary school, university, and professional use.

Its Natural Textbook Display allows mathematical expressions to appear just as they do in textbooks, making calculations easier to read and understand. The calculator also features dual power (solar and battery), a protective slide-on hard case, and a durable, user-friendly design for long-lasting performance.

Whether you're solving complex equations, performing statistical analysis, or preparing for examinations, the Casio FX-991ES delivers speed, accuracy, and reliability.

Key Features

• Genuine Casio FX-991ES scientific calculator
• 417 built-in mathematical and scientific functions
• Natural Textbook Display for easy reading
• Non-programmable (approved for many examinations)
• Matrix, vector, and complex number calculations
• Integration, differentiation, and equation solving
• Statistical and regression analysis functions
• Dual power: solar and battery
• Protective slide-on hard case included
• Ideal for students, engineers, teachers, and professionals