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๐ข Power your math mastery with IPEROTโs 417-function calculatorโbecause every equation deserves the best.
The IPEROT 991ES scientific calculator features 417 advanced functions including algebra, calculus, and statistics, displayed on a large 4-line LCD screen. Powered by a reliable dual solar and battery system, it ensures continuous use without battery anxiety. Designed for durability and ease of use, itโs ideal for students, educators, and professionals needing precise, multi-step calculations.
| ASIN | B0DG29TXGS |
| Best Sellers Rank | #24,985 in Office Products ( See Top 100 in Office Products ) #28 in Scientific Calculators |
| Brand | IPEROT |
| Calculator Type | Engineering/Scientific |
| Color | BLACK |
| Customer Reviews | 4.4 4.4 out of 5 stars (446) |
| 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!
M**Y
For the pink lovers
Super cute and works well(itโs a calculator) I used it for my college algebra class
Z**B
Excellent Quality
Very user friendly
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.
T**E
Quality
Great for engineering
L**S
It will get the job done
Super handy, easy to understand and work with calculator, great design layout of key and very strong protection cover
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
It doesn't supports warranty.
T**L
Perfect for what I need!
ุง**ู
ุงูู ูุชุฌ ูุตููู ุบูุฑ ุงููู ู ุงูุงุนูุงู ุชู ุงู ุง ู ุงุฑูู ู ุฎุชููู ููุง ูุนู ู ุจุงูุทุงูู ุงูุดู ุณูู ูุฑุฏุฆ ุฌุฏุง
A**.
Bought for my kid. Loves it
K**Y
Even though it has a battery and a solar panel, the calculator didnโt turn on. One of the screws was also missing on the back
Trustpilot
1 month ago
1 week ago