---
product_id: 648702565
title: "991EX Scientific Calculator with Advanced 550 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display"
brand: "catiga"
price: "C$4043"
currency: NIO
in_stock: true
reviews_count: 13
category: "Catiga"
url: https://www.desertcart.ni/products/648702565-991ex-scientific-calculator-with-advanced-550-functions-solar-and-battery
store_origin: NI
region: Nicaragua
---

# 7x3.3 inch dual display 3 versatile operating modes 360+ advanced functions 991EX Scientific Calculator with Advanced 550 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display

**Brand:** catiga
**Price:** C$4043
**Availability:** ✅ In Stock

## Summary

> 📈 Elevate your calculations—where precision meets power!

## Quick Answers

- **What is this?** 991EX Scientific Calculator with Advanced 550 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display by catiga
- **How much does it cost?** C$4043 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/648702565-991ex-scientific-calculator-with-advanced-550-functions-solar-and-battery)

## Best For

- catiga enthusiasts

## Why This Product

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

## Key Features

- • **Seamless Mode Switching:** Angular, calculation, and display modes adapt instantly to your workflow.
- • **Designed for Every Learner:** Perfectly suited for beginners and advanced students tackling high school or college courses.
- • **Visualize Complex Formulas:** Large dual display lets you see graphs and equations side-by-side for flawless accuracy.
- • **Master Every Math Challenge:** Over 360 functions covering everything from algebra to calculus and statistics.
- • **Stay Exam-Ready & Confident:** Trusted by GCSE students and beyond, this calculator keeps you ahead of the curve.

## Overview

This Scientific Calculator with Graphic Functions features a large 7x3.3 inch screen that displays graphs and equations simultaneously. It offers over 360 functions including fractions, statistics, complex numbers, and regression, with 3 operating modes (Angular, Calculation, Display). Ideal for high school and college students across a wide range of subjects, it combines advanced capabilities with an intuitive interface to support both beginners and advanced users.

## Description

Scientific Calculator with Graphic Functions - Multiple Modes with Intuitive Interface - Perfect for Beginner and Advanced Courses, High School or College: desertcart.co.uk: Stationery & Office Supplies

Review: Calculator for gcse exams - Lovely calculator. Used for GCSE exams. All good
Review: Useful - Lots of functions.

## Features

- SCIENTIFIC CALCULATOR WITH GRAPHIC FUNCTION: This is a scientific calculator that is able to show graphs of formulas; It features a screen large enough to be able to display graphs and equations simultaneously, allowing you to see calculations and corrections in high detail. Its 7 x 3.3 size ensures comfortable use
- MULTIPLE MODES: This calculator features 3 operating modes: Angular Measurement, Calculation, and Display modes; More information is available in the photos
- OVER 360 FUNCTIONS: Including fractions, statistics, complex number calculations, linear regression, standard deviation, permutations, and variable solving
- Perfect for Advanced and Beginner courses including Pre-Algebra, Algebra I, Algebra II, Geometry, Trigonometry, Calculus, AP Calculus, AP Statistics, Biology, Chemistry, Physics, Finance & Business
- PLEASE NOTE: This is a Scientific Calculator and not a Graphing Calculator; The graph functions help to visualize your formulas

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B092RRBDWK |
| Best Sellers Rank | 9,898 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 33 in Scientific Calculators |
| Guaranteed software updates until | unknown |
| Manufacturer | Catiga |
| Manufacturer reference | CS-229 |
| Product Dimensions | 18.08 x 11.43 x 0.1 cm; 136.08 g |

## Product Details

- **Brand:** CATIGA
- **Calculator Type:** Engineering/Scientific
- **Colour:** 4) Pink
- **Display type:** LCD
- **Material:** Plastic
- **Model name:** CS-229
- **Number of batteries:** 1 LR44 batteries required. (included)
- **Power source:** Battery Powered
- **Product dimensions:** 18.1L x 11.4W centimetres
- **Screen size:** 3.3 Inches

## Images

![991EX Scientific Calculator with Advanced 550 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display - Image 1](https://m.media-amazon.com/images/I/610I3HnBgNL.jpg)
![991EX Scientific Calculator with Advanced 550 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display - Image 2](https://m.media-amazon.com/images/I/61cVxgEquHL.jpg)
![991EX Scientific Calculator with Advanced 550 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display - Image 3](https://m.media-amazon.com/images/I/71DO2-clRdL.jpg)
![991EX Scientific Calculator with Advanced 550 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display - Image 4](https://m.media-amazon.com/images/I/71Y-rdSMdnL.jpg)
![991EX Scientific Calculator with Advanced 550 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display - Image 5](https://m.media-amazon.com/images/I/71xtO8Vcq0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Calculator for gcse exams
*by N***K on 22 August 2025*

Lovely calculator. Used for GCSE exams. All good

### ⭐⭐⭐⭐⭐ Useful
*by E***O on 16 November 2025*

Lots of functions.

### ⭐⭐⭐⭐ Scientists?
*by A***N on 2 November 2025*

If you want a scientific calculator that does the job, bearing in mind, that, I have, as of yet not explored all of its' capabilities, this one will probably do! I am currently working on my pet subject, that being Trickynometry, and am pleased to report, that it does not calculate in blasted washing powder! I have given it a 4 star rating, as to achieve 5 stars, it would have to be, what is termed as a "model" calculator! I wish "A level examiners" were aware of this! They were, when I took mine! In conclusion, the calculator will do!

## Frequently Bought Together

- CATIGA SS-991EX Scientific Calculator with Advanced 550 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display
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**Shop now:** [https://www.desertcart.ni/products/648702565-991ex-scientific-calculator-with-advanced-550-functions-solar-and-battery](https://www.desertcart.ni/products/648702565-991ex-scientific-calculator-with-advanced-550-functions-solar-and-battery)

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-01-27*