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The Casio Fx-991ES Plus 2nd Edition is a premium scientific calculator featuring 417 functions including advanced calculus, matrix, and complex number operations. Its Natural Textbook Display mirrors textbook equations for intuitive use, while dual solar and battery power ensure reliability. Designed for durability and comfort, it includes a two-way attachable hard case and authenticity verification via QR code, making it the trusted choice for engineering and science professionals.








| ASIN | B0846D5CBP |
| Brand | Casio |
| Calculator Type | Engineering/Scientific |
| Color | Black |
| Colour | Black |
| Compatible Devices | [Wide] |
| Country of Origin | Japan |
| Customer Reviews | 4.6 out of 5 stars 14,768 Reviews |
| Display Type | LCD |
| Enclosure Material | Metal or Durable Plastic |
| Global Trade Identification Number | 04549526608773 |
| Item Dimensions L x W | 16.2L x 7.7W centimeters |
| Item Type Name | CASIO FX-991ES PLUS 2nd Edition | Technical and Scientific Calculator |
| Item Weight | 95 Grams |
| Manufacturer | Casio |
| Mfr Part Number | C79 |
| Model Name | fx-991ES PLUS 2nd edition |
| Model Number | FX-991ES PLUS 2ND EDITION |
| Number of Batteries | 1 LR44 batteries required. (included) |
| Number of batteries | 1 LR44 batteries required. (included) |
| Power Source | Solar powered and battery powered |
| Power source | Solar powered and battery powered |
| Screen Size | 4 Inches |
| Screen size | 4 Inches |
| Warranty Description | 1 year manufacturer warranty |
M**N
⭐⭐⭐⭐⭐ Outstanding Calculator for Technical and Scientific Use!
The Casio Fx-991ES Plus-2nd Edition is an exceptional tool for anyone in need of a reliable and versatile scientific calculator. As a student of engineering, I’ve found this model to be an absolute lifesaver for solving complex problems efficiently. Comprehensive Functionality: It covers everything from basic arithmetic to advanced functions like calculus, matrix operations, and complex numbers. The 417 functions available ensure that it meets the demands of both students and professionals. Natural Textbook Display: The Natural Display makes it incredibly easy to input and review equations as they appear in textbooks. This feature is a huge plus for clarity and error-checking. Durability and Design: The build quality is robust, and the design is sleek and compact. It’s lightweight, making it easy to carry around, yet feels sturdy enough to withstand daily use. User-Friendly Interface: Despite its extensive features, the calculator is intuitive to use. The buttons are responsive, and the layout is logical, making even complex calculations straightforward. Solar and Battery Powered: The dual power source ensures it works seamlessly in different environments, whether you’re under bright classroom lights or in dimly lit settings. Affordable Pricing: Considering its extensive capabilities, the calculator offers fantastic value for money. It’s a worthwhile investment for anyone serious about technical or scientific work. Verdict: The Casio Fx-991ES Plus-2nd Edition has exceeded my expectations. Whether you're a student tackling exams or a professional needing quick, accurate calculations, this calculator is the perfect companion. Highly recommended!
O**S
Good quality
Good quality
O**I
Good calculator
Buttons feel nice, but some options are confusing. Still good overall. Would recommend.
Z**D
Great
Works well
D**O
GOAT
Carried me in math, physics, and chem.
N**J
Good quality
Good price and nice quality
M**D
Recommended
Original product and working fine.
S**M
Very good!
A very good product
G**.
Great product
Good price and great product
S**D
Perfecta.
Excelente calculadora.
L**H
Excellente calculatrice
J’ai acheté cette calculatrice Casio pour mes cours et je suis vraiment satisfaite. Elle est facile à utiliser, les touches sont réactives et l’écran est clair même après plusieurs heures d’utilisation. Elle gère parfaitement les fonctions scientifiques dont j’ai besoin pour les devoirs et les examens, et je trouve qu’elle est bien conçue pour les étudiants. Le manuel est aussi utile pour comprendre certaines fonctions avancées. Le rapport qualité-prix est excellent je la recommande vivement à tous ceux qui ont besoin d’une calculatrice performante et durable.
N**A
親戚にプレゼントした
めっちゃ使いやすいと言ってた
P**U
Genuine product.
Value for money, has all functions required in engineering exams. Allowed in exams at college. Weight is ok .
Trustpilot
1 month ago
2 weeks ago