---
product_id: 644448999
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: "FREE"
currency: ISK
in_stock: false
url: https://www.desertcart.is/products/644448999-catiga-ss-991ex-scientific-calculator-with-advanced-550-functions-solar
store_origin: IS
region: Iceland
---

# 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:** FREE
**Availability:** ❌ Out of Stock

## Summary

> 🔬 Elevate your math game with precision and speed — don’t get left behind!

## 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?** FREE with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/644448999-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

- • **See More, Solve Faster:** Large, crystal-clear screen displays detailed equations and spreadsheets simultaneously.
- • **Textbook-Style Display:** Formulas and expressions appear exactly as in textbooks, boosting accuracy and confidence.
- • **Always On, Always Ready:** Dual solar and battery power ensures zero downtime during critical problem-solving.
- • **Built to Last & Support You:** Durable design backed by a 365-day warranty and responsive 24-hour customer care.
- • **Master Complex Calculations:** 552 functions covering calculus, matrices, stats & more for every STEM challenge.

## Overview

The CATIGA SS-991EX is a high-performance scientific calculator featuring 552 advanced functions including calculus, matrix, and statistical operations. It boasts a 32% larger high-resolution LCD that displays textbook-style formulas for enhanced clarity. Powered by both solar and battery sources, it guarantees uninterrupted use. Designed for durability and backed by a 1-year warranty, it’s ideal for high school, college, and professional STEM users seeking speed, accuracy, and reliability.

## Description

Buy CATIGA SS-991EX Scientific Calculator with Advanced 550 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display: Scientific - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## 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 | #176,700 in Office Products ( See Top 100 in Office Products ) #138 in Scientific Calculators |
| Brand | CATIGA |
| Calculator Type | Engineering/Scientific |
| Color | Professional Black |
| Compatible Devices | Single Use |
| Customer Reviews | 4.5 out of 5 stars 138 Reviews |
| Display Type | LCD |
| Enclosure Material | Plastic Or Metal Alloy |
| Item Dimensions L x W | 6.46"L x 3.15"W |
| Manufacturer | CATIGA |
| Mfr Part Number | SS-991EX |
| Model Name | CATIGA SS-991EX |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Source | Battery Powered |
| Screen Size | 3 inches |
| UPC | 813629025138 813629023745 |

## Product Details

- **Brand:** CATIGA
- **Calculator Type:** Engineering/Scientific
- **Color:** 991-EX Black
- **Power Source:** Battery Powered
- **Screen Size:** 3 Inches

## 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/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 2](https://m.media-amazon.com/images/I/81GBkm+HeNL.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/81jgzEBboWL.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/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 5](https://m.media-amazon.com/images/I/71cbNeW636L.jpg)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-09-17*