The Scientific Calculator (CS-991ES Plus / Casio Style) is a powerful multi-function scientific calculator designed for high school, college, university students, and engineering professionals. Featuring a Natural Textbook Display (Natural-V.P.A.M.) and 417 built-in mathematical functions, it allows you to input and view fractions, derivatives, integrals, matrices, and other expressions exactly as they appear in textbooks.

Key Features:

• Natural Textbook Display: Displays mathematical expressions like fractions, roots, and integrals as they appear in textbooks for easier reading and comprehension.

• 417 Advanced Functions: Handles algebra, calculus, matrix calculations, vector operations, complex numbers, statistics, and equation solving with ease.

• Dual Power Operation: Solar powered with battery backup for reliable, uninterrupted performance during exams, classes, and daily study.

• Multi-Replay & Scroll Function: Easily recall, review, and edit previously entered formulas to check for errors or perform multi-step calculations.

• Durable Slide-On Hard Case: Comes with a protective hard plastic cover to keep the screen and keypad safe from scratches and damage in bags.

Product Specifications:

• Model: CS-991ES / FX-991ES Style

• Type: Non-Programmable Scientific Calculator

• Functions: 417 Functions

• Power Source: Dual Power (Solar + Battery)

• Ideal For: High School, College, University, Engineering, Mathematics, Science, and Exam Preparation