---
product_id: 648702565
title: "CATIGA SS-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: "KSh12504"
currency: KES
in_stock: false
reviews_count: 13
url: https://www.desertcart.co.ke/products/648702565-catiga-ss-991ex-scientific-calculator-with-advanced-550-functions-solar
store_origin: KE
region: Kenya
---

# 32% larger high-res display dual solar & battery power 552 advanced functions CATIGA SS-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:** KSh12504
**Availability:** ❌ Out of Stock

## Summary

> 🔢 Elevate your calculations—because precision is the new power move.

## Quick Answers

- **What is this?** CATIGA SS-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?** KSh12504 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/648702565-catiga-ss-991ex-scientific-calculator-with-advanced-550-functions-solar)

## 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

- • **Unstoppable Power Duo:** Solar and battery backup ensure your calculator never quits during critical moments.
- • **Textbook-Style Display:** See formulas exactly as in your textbooks for flawless understanding and accuracy.
- • **Master 552 Functions with Ease:** From calculus to complex numbers, conquer every equation effortlessly.
- • **Visual Clarity on a Big Screen:** Enjoy a 32% larger high-res display that brings spreadsheets and matrices to life.
- • **Built to Last, Backed to Support:** Durable design with a 365-day warranty and responsive customer care for peace of mind.

## Overview

The CATIGA SS-991EX is a robust scientific calculator featuring 552 advanced functions including calculus, statistics, and matrix operations. It boasts a 32% larger high-resolution display for clear, textbook-style formula visualization. Dual solar and battery power guarantee uninterrupted use, while its durable build and 365-day warranty ensure long-term reliability for students and professionals alike.

## Description

CATIGA SS-991EX Scientific Calculator with Advanced 550 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display: 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

- 552 FUNCTIONS SCIENTIFIC CALCULATOR: Includes spreadsheet, matrix calculations, statistics, calculus, complex number calculations, equation calculations, standard deviation, vector calculations, permutations and combinations. Perfect for Advanced and Beginner courses including Biology, Chemistry, Physics, Finance and Business.
- USER FRIENDLY FORMAT: Displays formulas and expressions as they appear in textbooks, simplifying learning and problem-solving. This feature ensures that complex equations are presented in a clear, structured manner, making it easier for users to follow along and verify their work, ultimately enhancing accuracy and understanding in both educational and professional settings
- LARGE HIGH RESOLUTION SCREEN: The high-resolution LCD display is 32% larger than regular two-line calculators, showing intricate details ideal for advanced operations such as spreadsheets and 4x4 matrix calculations. The spacious screen allows graphs and equations to be displayed simultaneously, enhancing the clarity and precision of your work
- DUAL POWER SOURCE: Features both solar power and a battery backup, guaranteeing continuous performance for crucial calculations, making it reliable and efficient for use in any environment
- DURABILITY and QUALITY: Engineered with strong materials, SS-991EX withstands extensive use, providing long-term reliability. If your calculator fails to turn on, try pressing the reset button on the back. For further issues, benefit from our 365-day limited warranty. Contact us, and we'll respond within 24 hours

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D7VJMNJ9 |
| Best Sellers Rank | 34,557 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 76 in Scientific Calculators |
| Guaranteed software updates until | unknown |
| Manufacturer | CATIGA |
| Manufacturer reference | SS-991EX |
| Product Dimensions | 16.41 x 8 x 0.1 cm; 170 g |

## Product Details

- **Brand:** CATIGA
- **Calculator Type:** Engineering/Scientific
- **Colour:** 2) 991-EX Black
- **Display type:** LCD
- **Material:** Plastic Or Metal Alloy
- **Model name:** CATIGA SS-991EX
- **Power source:** Battery Powered
- **Product dimensions:** 16.4L x 8W centimetres
- **Screen size:** 3 Inches
- **UPC:** 813629025138 813629023745

## Images

![CATIGA SS-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/719F4ptip8L.jpg)
![CATIGA SS-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/71VPpk3aloL.jpg)
![CATIGA SS-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/71cbNeW636L.jpg)
![CATIGA SS-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/71oqbtN5X9L.jpg)
![CATIGA SS-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/81GBkm+HeNL.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!

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**Shop now:** [https://www.desertcart.co.ke/products/648702565-catiga-ss-991ex-scientific-calculator-with-advanced-550-functions-solar](https://www.desertcart.co.ke/products/648702565-catiga-ss-991ex-scientific-calculator-with-advanced-550-functions-solar)

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*Product available on Desertcart Kenya*
*Store origin: KE*
*Last updated: 2026-02-02*