---
product_id: 692921189
title: "CTIFREE FC-991EX Scientific Calculator with Advanced 552 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display"
brand: "facehub47"
price: "฿69"
currency: THB
in_stock: false
url: https://www.desertcart.co.th/products/692921189-ctifree-fc-991ex-scientific-calculator-with-advanced-552-functions-solar
store_origin: TH
region: Thailand
---

# 552 advanced functions 32% larger high-res display dual solar & battery power CTIFREE FC-991EX Scientific Calculator with Advanced 552 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display

**Brand:** facehub47
**Price:** ฿69
**Availability:** ❌ Out of Stock

## Summary

> 📐 Elevate your math game with precision and power — never miss a calculation!

## Quick Answers

- **What is this?** CTIFREE FC-991EX Scientific Calculator with Advanced 552 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display by facehub47
- **How much does it cost?** ฿69 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/692921189-ctifree-fc-991ex-scientific-calculator-with-advanced-552-functions-solar)

## Best For

- facehub47 enthusiasts

## Why This Product

- Trusted facehub47 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unstoppable Power Duo:** Solar + battery backup ensures zero downtime during critical problem-solving moments
- • **Textbook-Style Display:** Formulas appear exactly as in textbooks, boosting accuracy and confidence
- • **Built to Last & Support You:** Durable ABS body with 365-day warranty and responsive customer care
- • **Master Complex Calculations:** 552 functions covering calculus, matrices, stats & more for every STEM challenge
- • **Visual Clarity on a Bigger Screen:** 32% larger LCD lets you see graphs and equations side-by-side with crystal clarity

## Overview

The CTIFREE FC-991EX is a professional-grade scientific calculator featuring 552 advanced functions including calculus, statistics, and matrix operations. It boasts a 32% larger high-resolution display for clear visualization of complex formulas exactly as shown in textbooks. Powered by both solar energy and battery backup, it guarantees uninterrupted use. Built with durable ABS material and backed by a 365-day warranty, it’s designed for high school and college students tackling advanced math and science courses.

## Description

CTIFREE FC-991EX SCIENTIFIC CALCULATOR 552 Functions: 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.

## Features

- CTIFREE FC-991EX 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,CTIFREE FC-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 |
|---------------|-------|
| Manufacturer | FACE HUB 47 FZE |
| Brand | Facehub47 |
| Product Dimensions | 7.2 x 3.7 x 0.1 cm; 180 g |
| Batteries | 1 LR44 batteries required. |
| Color | Black |
| Material Type | Acrylonitrile Butadiene Styrene (ABS) |
| Number of Items | 1 |
| Manufacturer Part Number | FC-991EX |
| Item Weight | 180 g |

## Product Details

- **Brand:** Facehub47
- **Colour:** Black
- **Calculator Type:** Engineering/Scientific
- **Power source:** Solar Powered,Battery
- **Screen size:** 3 Inches

## Images

![CTIFREE FC-991EX Scientific Calculator with Advanced 552 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/61kFhmKXFaL.jpg)
![CTIFREE FC-991EX Scientific Calculator with Advanced 552 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/61FOIhuOxBL.jpg)
![CTIFREE FC-991EX Scientific Calculator with Advanced 552 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/615QdfrawuL.jpg)
![CTIFREE FC-991EX Scientific Calculator with Advanced 552 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/61J44oAZAVL.jpg)
![CTIFREE FC-991EX Scientific Calculator with Advanced 552 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/61zhqwi3urL.jpg)

## Frequently Bought Together

- CTIFREE FC-991EX Scientific Calculator with Advanced 552 Functions- Solar & Battery Powered, Multi-Function, High School & College Math, Trigonometry, Statistics, Algebra, Durable, Large Display
- Helix Oxford Mathematical Instruments Set

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.th/products/692921189-ctifree-fc-991ex-scientific-calculator-with-advanced-552-functions-solar](https://www.desertcart.co.th/products/692921189-ctifree-fc-991ex-scientific-calculator-with-advanced-552-functions-solar)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-11*