---
product_id: 664850619
title: "Scientific Calculators, IPEROT Black Math Calculator with 417 Function, Solar Battery Power and 4-Line Display, School Supplies for Middle High College Students Teachers (Black 991ES)"
brand: "iperot"
price: "133.20 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Iperot"
url: https://www.desertcart.tn/products/664850619-scientific-calculators-iperot-black-math-calculator-with-417-function-solar
store_origin: TN
region: Tunisia
---

# 4-line large display 417 advanced functions Dual solar & battery power Scientific Calculators, IPEROT Black Math Calculator with 417 Function, Solar Battery Power and 4-Line Display, School Supplies for Middle High College Students Teachers (Black 991ES)

**Brand:** iperot
**Price:** 133.20 DT
**Availability:** ✅ In Stock

## Summary

> 🔢 Power through math with 417 functions and zero downtime!

## Quick Answers

- **What is this?** Scientific Calculators, IPEROT Black Math Calculator with 417 Function, Solar Battery Power and 4-Line Display, School Supplies for Middle High College Students Teachers (Black 991ES) by iperot
- **How much does it cost?** 133.20 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/664850619-scientific-calculators-iperot-black-math-calculator-with-417-function-solar)

## Best For

- iperot enthusiasts

## Why This Product

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

## Key Features

- • **Power That Never Quits:** Dual solar and battery system ensures uninterrupted use anytime, anywhere.
- • **See Every Step Clearly:** Large 4-line display with adjustable brightness lets you track calculations like a pro.
- • **Trusted by Students & Pros:** Ideal for middle school to college, teachers, engineers, and anyone serious about precision.
- • **Built to Endure Your Hustle:** Durable ABS buttons and slide cover protect your calculator from daily wear and tear.
- • **Master Complex Calculations:** 417 functions covering algebra, calculus, stats & more—your all-in-one math powerhouse.

## Overview

The IPEROT 991ES scientific calculator combines 417 advanced math functions with a large 4-line LCD display and dual solar-battery power for reliable, on-the-go use. Designed with durable ABS buttons and a protective slide cover, it’s perfect for students and professionals needing precise, visible calculations in algebra, calculus, statistics, and engineering.

## Description

Product description Adjustable screen brightness and large display. You can adjust the screen brightness according to your needs to ensure clear and visible calculation results. Buttons made of ABS material provide a comfortable and smooth tactile experience, whether for quick calculations or extended use. Supports both solar power and battery as power sources, allowing you to conveniently use the calculator anytime and anywhere. This calculator features a slide cover protection that prevents damage to your calculator in harsh environments. The slide cover fully covers the calculator, protecting the screen and buttons from dust, water droplets, or other external substances. Whether you are at school, outdoors, or on the go, the slide cover ensures the safety and reliability of the calculator, allowing you to use it with peace of mind.

Review: Great calculator - Great light weight calculator. Easy to use. Great for my middle schooler in helping with fractions. Comes with a pamphlet on how to get the calculator to do certain functions. I really like the sliding cover as well.
Review: Good Calculator - Good cheap calculator! You cant graph but everything works as it should, and it does its job so no complaints also the best part is you don't have to replace batteries!

## Features

- 417 FUNCTIONS : This scientific calculator boasts 417 function, including algebraic, fraction, derivative, integral, statistical, complex number calculation, linear regression, standard deviation, permutation and combination, and variable solving, similar to operations found in math textbooks. It is well-suited for advanced and basic courses, high school and college students financial calculator calculadora cientifica construction calculator
- LARGE DISPLAY SCREEN : lts screen is large enough to display four lines of numbers,.making it easier to read than traditional calculators. The written display of expressions allows you tosee the calculation process and results, making it a non-programmable calculator
- SOLAR AND BATTERY DUAL POWER SYSTEM : The calculator features a dual power systemthat uses both solar and battery power, allowing users to use it anytime, anywhere, without worryingabout battery issues
- STABLE AND RELlABLE : The scientific calculator is made with high-quality materials, has asturdy and durable exterior, and is easy to operate, with stable and reliable performance
- WIDE RANGE OF USERS : As an essential school supply, middle school supplies, it is ideal for elementary, middle,and high school students, college students, engineers, nurses, and teachers, among others. lt can meettheir calculation needs in math, science, and engineering felds and help them better understand andapply knowledge. It can also be given to those who need to do scientifc calculations, makingit a practical and meaningful school supplies

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DG29TXGS |
| Best Sellers Rank | #41,560 in Office Products ( See Top 100 in Office Products ) #38 in Scientific Calculators |
| Brand | IPEROT |
| Calculator Type | Engineering/Scientific |
| Color | BLACK |
| Customer Reviews | 4.5 out of 5 stars 481 Reviews |
| Display Type | LCD |
| Enclosure Material | Plastic |
| Item Dimensions L x W | 6"L x 2"W |
| Manufacturer | IPEROT |
| Mfr Part Number | 01 |
| Model Name | 991ES |
| Model Number | calculator-AB |
| Number of Batteries | 1 LR44 batteries required. (included) |
| Power Source | Solar Powered |
| Screen Size | 6.5 Inches |
| Warranty Description | 1 |

## Product Details

- **Brand:** IPEROT
- **Calculator Type:** Engineering/Scientific
- **Color:** BLACK
- **Power Source:** Solar Powered
- **Screen Size:** 6.5 Inches

## Images

![Scientific Calculators, IPEROT Black Math Calculator with 417 Function, Solar Battery Power and 4-Line Display, School Supplies for Middle High College Students Teachers (Black 991ES) - Image 1](https://m.media-amazon.com/images/I/511uDMn2APL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great calculator
*by C***A on February 23, 2026*

Great light weight calculator. Easy to use. Great for my middle schooler in helping with fractions. Comes with a pamphlet on how to get the calculator to do certain functions. I really like the sliding cover as well.

### ⭐⭐⭐⭐⭐ Good Calculator
*by L***A on February 2, 2026*

Good cheap calculator! You cant graph but everything works as it should, and it does its job so no complaints also the best part is you don't have to replace batteries!

### ⭐⭐⭐⭐⭐ Accurate! 💗
*by C***G on May 27, 2026*

I really like this calculator and the shade and tone of the pink is exactly as pictured coming from somebody that has done art for a really long time. For anybody of you that are specific on that kind of thing.

## Frequently Bought Together

- Scientific Calculators, IPEROT Black Math Calculator with 417 Function, Solar Battery Power and 4-Line Display, School Supplies for Middle High College Students Teachers (Black 991ES)
- Texas Instruments TI-30XIIS Scientific Calculator, Black with Blue Accents
- Casio fx-115ES Plus 2nd Edition – Advanced Scientific Calculator | 280+ Functions, Natural Textbook Display℠ | Ideal for Math, Science, Engineering & Statistics

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-07-05*