---
product_id: 669442363
title: "FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black"
brand: "casio"
price: "19.83 OMR"
currency: OMR
in_stock: true
url: https://www.desertcart.com.om/products/669442363-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401-functions
store_origin: OM
region: Oman
---

# compact & drop-resistant design 2-line algebraic display 401 functions packed FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black

**Brand:** casio
**Price:** 19.83 OMR
**Availability:** ✅ In Stock

## Summary

> 📊 Elevate your calculations with precision and style!

## Quick Answers

- **What is this?** FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black by casio
- **How much does it cost?** 19.83 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/669442363-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401-functions)

## Best For

- casio enthusiasts

## Why This Product

- Trusted casio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Drop-resistant body with water-resistant keys and a protective slide-on case.
- • **Sleek & Portable:** Curved edges and compact size fit perfectly in your professional toolkit.
- • **Dual-Line Display:** View expressions and results simultaneously for error-free calculations.
- • **Color-Coded Keypad:** Instantly identify keys and speed up your workflow with ease.
- • **Master 401 Functions:** From calculus to statistics, handle complex problems effortlessly.

## Overview

The Casio FX-991MS 2nd Gen is a non-programmable scientific calculator featuring 401 functions, a 2-line S-V.P.A.M. display for clear algebraic input and output, and a compact, durable design with color-coded keys. Ideal for professionals and students, it supports advanced math operations including differentiation, integration, and matrix calculations, backed by a 3-year warranty.

## Description

Casio FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black

## Features

- 2nd edition comes with same features and new sleek design with curved edges which makes it compact and easy to carry
- 10 + 2 digits: 10-digit mantissa + 2-digit exponential display
- Solves Differentiation, Integration, Statistics, Regression, Matrix, Vector etc
- Colour coded keypad for easy key differentiation
- 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
- Multi-replay: Quick and easy recall of previously executed formulas for editing and re-execution
- Drop resistant body with water resistant printing on Keys
- Comes with slide-on hard case
- 3 Years All India Manufacturer Warranty
- Country of Origin: Thailand

## Product Details

- **Brand:** Casio
- **Colour:** Black
- **Calculator Type:** Engineering/Scientific
- **Power source:** Solar Powered
- **Screen size:** 7 Inches
- **Number of batteries:** Nonstandard Battery batteries required. (included)
- **Model name:** Scientific
- **Material:** Plastic
- **Product dimensions:** 16.2L x 7.7W centimetres
- **Display type:** LCD

## Images

![FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black - Image 1](https://m.media-amazon.com/images/I/61HXfPgQcqL.jpg)

## Available Options

This product comes in different **Style Name** options.

## Frequently Bought Together

- Casio FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display
- Casio MJ-12D 150 Steps Check and Correct Desktop Calculator

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**Shop now:** [https://www.desertcart.com.om/products/669442363-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401-functions](https://www.desertcart.com.om/products/669442363-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401-functions)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-19*