---
product_id: 320565093
title: "CasioFX 991 ES PLUS Calculator"
brand: "casio"
price: "HK$441"
currency: HKD
in_stock: false
url: https://www.desertcart.hk/products/320565093-casiofx-991-es-plus-calculator
store_origin: HK
region: Hong Kong
---

# Compact design 1 LR44 battery 417 functions CasioFX 991 ES PLUS Calculator

**Brand:** casio
**Price:** HK$441
**Availability:** ❌ Out of Stock

## Summary

> 📚 Elevate Your Calculations with Style!

## Quick Answers

- **What is this?** CasioFX 991 ES PLUS Calculator by casio
- **How much does it cost?** HK$441 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/320565093-casiofx-991-es-plus-calculator)

## 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

- • **Durable Design:** Crafted from high-quality plastic, built to withstand the rigors of daily use.
- • **Natural Display:** Experience equations as they appear in textbooks for intuitive understanding.
- • **Enhanced Equation Mode:** Solve complex problems faster with the improved equation mode.
- • **Lightweight & Portable:** Weighing just 132g, take your calculator anywhere without the bulk.
- • **Unleash Your Potential:** With 417 functions at your fingertips, tackle any math challenge with ease.

## Overview

The Casio FX 991 ES PLUS is a state-of-the-art scientific calculator designed for technical school students, featuring 417 functions, a natural textbook display, and an improved equation mode, all in a lightweight and durable design.

## Description

CasioFX 991 ES PLUS Calculator

## Features

- Secuela of the Casio Fx 991 is
- Scientific calculator technical school.
- 417 functions, 14 functions more than the Casio Fx 991 is
- fx-991 is now available with numbers (random integer numbers) and improved equation mode
- Natural Display (natural textbook display)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Calculator |
| Brand | Casio |
| Model number | Casio FX 991 ES PLUS |
| Product Dimensions | 0.03 x 0.03 x 0.03 cm; 131.54 Grams |
| Batteries | 1 LR44 batteries required. |
| Material Type | Plastic |
| Lines Per Page | 2 |
| Manufacturer Part Number | FX-991 ES PLUS |
| Item Weight | 132 g |

## Product Details

- **Brand:** Casio
- **Colour:** Black
- **Calculator Type:** Engineering/Scientific
- **Power source:** Battery Powered
- **Screen size:** 20 Centimeters

## Images

![CasioFX 991 ES PLUS Calculator - Image 1](https://m.media-amazon.com/images/I/61v44oHp1cL.jpg)
![CasioFX 991 ES PLUS Calculator - Image 2](https://m.media-amazon.com/images/I/41fIjAcl8IL.jpg)
![CasioFX 991 ES PLUS Calculator - Image 3](https://m.media-amazon.com/images/I/61EOpAxE-PL.jpg)
![CasioFX 991 ES PLUS Calculator - Image 4](https://m.media-amazon.com/images/I/51NSPCeHhfL.jpg)
![CasioFX 991 ES PLUS Calculator - Image 5](https://m.media-amazon.com/images/I/71D3Y4+8YFL.jpg)

## Frequently Bought Together

- Casio FX 991 ES PLUS Calculator
- Casio fx-991ES Plus 2 Scientific Calculator with 417 Functions and Display, Natural
- Casio FX-991SP CW – Scientific Calculator, Recommended for Spanish and Portuguese Curriculum, 5 Languages, More than 560 Functions, Solar, White

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**Shop now:** [https://www.desertcart.hk/products/320565093-casiofx-991-es-plus-calculator](https://www.desertcart.hk/products/320565093-casiofx-991-es-plus-calculator)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-22*