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🔢 Elevate your calculations—because average just won’t do!
The IPEROT 991ES scientific calculator features 417 functions including algebra, calculus, and statistics, displayed on a large 4-line LCD screen. Powered by both solar and battery, it offers reliable performance with a durable build, making it ideal for students and professionals in math, science, and engineering fields.
| ASIN | B0DG29TXGS |
| Best Sellers Rank | #8,624 in Office Products ( See Top 100 in Office Products ) #31 in Scientific Calculators |
| Brand | IPEROT |
| Calculator Type | Engineering/Scientific |
| Color | Black |
| Customer Reviews | 4.5 out of 5 stars 626 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) |
| Number of Items | 1 |
| Power Source | Solar Powered |
| Screen Size | 6.5 inches |
| Warranty Description | 1 |
S**R
Awsome product
Very standard easy to use calculater.statistics functions are working very well.good for advanced use not as a toy.
K**E
The Elle Woods of calculators🩷🤍
It works just like the ones I would typically buy but pink. It is amazing and I can't wait to see how it holds up through out this school year.
A**K
Great Calculator for Students – Functional and Stylish
This Scientific Calculator with Graphing Functions is a fantastic tool for students who need more than a basic calculator. It combines scientific functions and graphing capabilities, making it very helpful for algebra, trigonometry, statistics, and other advanced math classes. One thing I really like is the 10 built-in calculation modes, which allow you to work with equations, matrices, statistics, vectors, and more. This makes it versatile for high school and college-level math problems. The graphing features are also impressive. It can display different types of graphs like Cartesian equations, polar functions, and parametric equations, which helps visualize mathematical concepts much more clearly. The large high-resolution display makes it easy to read both calculations and graphs without straining your eyes, and the keyboard layout is comfortable and responsive. It also runs on AAA batteries and automatically powers off after inactivity, which helps conserve battery life. I also love the pink design—it stands out from typical black calculators and adds a fun touch to school supplies while still being professional and practical.
E**Z
Works perfectly
Got my girlfriend through college. Great buy but has a learning curve as should be expected.
K**H
It works
Does what it's supposed to do.
A**A
Alright
Looks pretty , you just have to press the buttons harder . I think it’s more of a my problem but otherwise it’s great , works fine
D**A
Good product
Perfect product
J**Y
NOT A CASIO AKA WHATS REQUIRED FOR MOST ENGR EXAMS
I bought this because I thought it was 1st edition of Casio fx-115es plus. They literally went above and beyond to make them identical. However, this is not allowed in professional engineering exams. I am hoping someone reads this before buying it. It is the same so if you are buying it for a personal calculator, great. However it is not on the approved calculator list for NCEES and other important tests. YIKES. DO NOT BUY IF IT IS FOR ANY KIND OF OFFICIAL EXAM. Not allowed. Great calculator, but not being allowed on the place you need it most could cost you that $500 exam fee. Thank God I had a spare with the buttons worn to the bone in the car.
A**E
Too expensive
It doesn't supports warranty.
A**A
منتج غير مطابق للصورة
المنتج اللي جالي براند مختلف وصورة مختلفة شكلها آلة حاسبة بتاعة اطفال
T**L
Perfect!
Perfect for what I need!
M**E
Mike calculator review
Happy with this purchase, work as advertised
A**.
Good
Bought for my kid. Loves it
Trustpilot
1 month ago
3 weeks ago