---
product_id: 729923793
title: "991EX Scientific Calculator, Engineering Scientific Calculator with 552 Functions, LCD Scientific Calculator"
brand: "cliunt"
price: "¥638"
currency: JPY
in_stock: false
url: https://www.desertcart.jp/products/729923793-991ex-scientific-calculator-engineering-scientific-calculator-with-552-functions-lcd
store_origin: JP
region: Japan
---

# 3.14-inch HD natural display 552 advanced functions Dual solar + battery power 991EX Scientific Calculator, Engineering Scientific Calculator with 552 Functions, LCD Scientific Calculator

**Brand:** cliunt
**Price:** ¥638
**Availability:** ❌ Out of Stock

## Summary

> 📐 Elevate your calculations, never miss a beat!

## Quick Answers

- **What is this?** 991EX Scientific Calculator, Engineering Scientific Calculator with 552 Functions, LCD Scientific Calculator by cliunt
- **How much does it cost?** ¥638 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/729923793-991ex-scientific-calculator-engineering-scientific-calculator-with-552-functions-lcd)

## Best For

- cliunt enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Ready to Go:** Lightweight, pocket-friendly design with sliding hard case—your perfect study and work companion.
- • **Unstoppable Power Duo:** Solar panel plus replaceable battery ensures zero downtime, anytime, anywhere.
- • **Crystal Clear Readability:** High-definition natural textbook display mirrors your textbooks for flawless comprehension.
- • **Master Complex Calculations:** 552 scientific functions to conquer algebra, calculus, stats & more with ease.
- • **Precision at Your Fingertips:** Sensitive, high-quality sensor keys deliver fast, accurate input with a satisfying touch.

## Overview

The 991EX Scientific Calculator is a powerhouse tool featuring 552 scientific functions, a 3.14-inch high-definition natural textbook display, and dual power supply (solar + replaceable battery) for uninterrupted use. Designed with sensitive sensor keys and a compact, lightweight form factor with a protective sliding case, it’s ideal for students and professionals tackling complex math, engineering, and scientific problems on the go.

## Description

Sensitive Keys: The sensitive key adopts high quality sensor buttons that are more sensitive and accurate than silicone keys. The calculator responds quickly to input characters and the soft button is comfortable to use. 【MULTIPLE PLAYING FUNCTION】The multi-playback function of the calculator allows you to check and edit the calculation, make it easier to check and fix errors and make data more accurate when using. WIDE APPLICATION: This function calculator is suitable for use in a variety of specialty and academic fields. A valuable tool for math, physics, geometry, and other courses. Covers most of the scientific features that students from middle to college need to use on courses and exams. Suitable for various mathematical problems encountered in middle school or college courses. Specification Information Material: Plastic Size: 6.5*3.1*0.6 inches (16.5*8*1.5 Performance: Dual energy, high resolution display, easy to carry, sensitive buttons Application: Suitable for a variety of specialty and academic fields and student testing tools. Weight: 6.1 oz (170 g). Package Includes: 1 x Scientific Calculator Warm Reminder: 1.Please allow 1-2mm error due to manual measurement. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. If you have any quality problems with our products, please feel free to contact us. We will resolve it as soon as possible.

## Features

- 【552 Function】This advanced calculator covers a wide range of math operations, including basic calculations, algebra, fractions, conductor functions, integration, scientific functions, statistical calculations, and more, providing a total of 552 scientific functions that can handle complex calculations
- Dual Power Electronic Calculator: Solar panel + replaceable button battery, dual safe uninterruptible power supply, environmental protection and energy saving advantages, smooth usage, long battery life, you can use the function calculator anytime, anywhere, without worrying about battery problems
- HIGH DEFINITION DISPLAY: High definition LCD display calculator can be used to display spreadsheets, calculations, and other data. The Scientific Calculator provides clear and easy readability for numbers, symbols and graphs especially useful when handling complicated math and charts
- 【Natural Textbook Display】The calculator has a natural textbook display that covers most of the scientific features required for students from middle to college to university to courses and tests. Enter forms, symbols, and mathematics in the same format as what appears in textbooks, the function calculator will help students see the calculation process and results. Engineering Scientific Calculators help students understand and verify their calculations
- EASY TO CARRY: This function calculator measures 16.5 x 8 x 1.5 cm, and weighs 170g. Compact and lightweight design, easy to carry and use anywhere. The engineering function calculator has a sliding hard case for easy carrying

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Display Size | 3.14 Inches |
| Color Name | multicolor (black / white) |
| Batteries Included | No |
| Batteries Required | No |
| Brand | CLIUNT |
| Manufacturer | CLIUNT |
| Item Model Number | Scientific Calculator-1 |
| Display Type | LCD |
| Material | Silicone |
| Product Dimensions | 16.5 x 8 x 0.1 cm; 160 g |

## Product Details

- **Brand:** CLIUNT
- **Color:** multicolor (black / white)
- **Calculator Type:** Engineering/Scientific
- **Power Source:** Solar Powered
- **Screen Size:** 3.14 Inches

## Images

![991EX Scientific Calculator, Engineering Scientific Calculator with 552 Functions, LCD Scientific Calculator - Image 1](https://m.media-amazon.com/images/I/617ew1acJLL.jpg)
![991EX Scientific Calculator, Engineering Scientific Calculator with 552 Functions, LCD Scientific Calculator - Image 2](https://m.media-amazon.com/images/I/61XYbW6rwbL.jpg)
![991EX Scientific Calculator, Engineering Scientific Calculator with 552 Functions, LCD Scientific Calculator - Image 3](https://m.media-amazon.com/images/I/61BySLHEltL.jpg)
![991EX Scientific Calculator, Engineering Scientific Calculator with 552 Functions, LCD Scientific Calculator - Image 4](https://m.media-amazon.com/images/I/71m2m54wzRL.jpg)
![991EX Scientific Calculator, Engineering Scientific Calculator with 552 Functions, LCD Scientific Calculator - Image 5](https://m.media-amazon.com/images/I/61J09ILbW3L.jpg)

## Frequently Bought Together

- CLIUNT FX-991EX Scientific Calculator, Engineering Scientific Calculator With 552 Functions, Lcd Display Scientific Calculators for School Students
- Pearson Edexcel AS and A level Mathematics Pure Mathematics Year 1/AS Textbook + e-book (A level Maths and Further Maths 2017)
- Edexcel AS and A level Mathematics Statistics & Mechanics Year 1/AS Textbook + e-book

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**Shop now:** [https://www.desertcart.jp/products/729923793-991ex-scientific-calculator-engineering-scientific-calculator-with-552-functions-lcd](https://www.desertcart.jp/products/729923793-991ex-scientific-calculator-engineering-scientific-calculator-with-552-functions-lcd)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-03*