CASIO fx-991MS-2

The CASIO FX-991MS-2 Scientific Calculator is a reliable and powerful calculator designed for students, engineers, and professionals. Featuring 401 built-in functions, dual power operation, and a multi-line display, the CASIO FX-991MS-2 helps solve complex mathematical and scientific calculations quickly and accurately.Features

Fraction calculations
Combination and permutation
Statistics (STAT-data editor, Standard deviation, Regression analysis)
9 variable memories
Comes with a slide-on hard case

Specifications

Number of Functions: 401

10 + 2 digits
10-digit mantissa + 2-digit exponential display.

Dot-matrix display
A high-resolution screen provides beautiful-looking graphs every time.

Regular percent
Regular percentage calculations.

Multi-replay
Quick and easy recall of previously executed formulas for editing and re-execution.

Solar & Battery
Solar-powered when light is sufficient, battery-powered when light is insufficient.

Plastic keys
Designed and engineered for easy operation.

S-V.P.A.M. (Super Visually Perfect Algebraic Method)
All the features of the existing V.P.A.M. series plus a new 2-line display and a useful replay function. All this helps to make mathematics easier to use and easier to understand than ever before.

STAT-data editor
Back-step viewing and editing of input data.

https://www.casio.com/intl/scientific-calculators/product.FX-991MS-2/