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🔢 Power through math with 417 functions and zero downtime!
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.
| 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 |
C**A
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.
L**A
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!
C**G
Accurate! 💗
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.
M**I
10
Good
P**T
Affordable and Functional, but Lacks Tactile Buttons
This is a functional calculator. While the buttons aren't clicky and have a somewhat mushy feel, it gets the job done. It's not exceptionally durable, but for its price point, it's a good and inexpensive option. The calculator is easy to use, and the display is clear.
R**O
Perfect
Great
Z**B
Excellent Quality
Very user friendly
B**D
Skip this product and find one that works!
This is a scientific calculator that I can’t get to go into scientific notation mode… I have looked up the directions tried every way, and it will not do exactly what it says. It’s supposed to do. Do not buy this product by any other scientific calculator you see because you will not get what you want from this calculator. Confusing does not work right and there is no directions whatsoever.
S**D
Recommend to buy it
Calculator is amazing make easy to solve my problem with mathematic
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
M**E
Mike calculator review
Happy with this purchase, work as advertised
B**E
Faulty
I bought this calculator 2 months ago and today It suddenly stopped working,why did it stop I don't know and the returning window closed so now I can't return it
Trustpilot
2 weeks ago
2 weeks ago