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Item #:
89430954
Casio FX-991DE CW ClassWiz Technical Scientific Calculator with Art Case Space Monkey German Menu Guide Limited Edition
86% of respondents would recommend this to a friend
Item #:
89430954
DJF 8140
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Order now and get it around Tuesday, September 29
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The FX-991DE CW model is the most powerful model of technical-scientific calculators with 696 functions.
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What Stands Out
Natural Display
The FX-991DE features a natural textbook display that presents mathematical expressions as they appear in textbooks, enhancing comprehension and reducing errors for students and professionals alike.
Excel Functions
This calculator includes a wide range of built-in functions, including statistics and matrix calculations, making it a versatile tool for advanced mathematics, science, and engineering studies.
User-Friendly Interface
Designed with intuitive menus and an easy-to-navigate keypad, this calculator simplifies complex calculations, allowing users to focus on problem-solving rather than searching for functions.
Product Details
| Product Dimensions | 17.3 x 7.7 x 1.6 cm; 150 g |
| Date First Available | 8 Jun 2023 |
| Manufacturer | Casio |
| Item model number | FX-991DEX-CASE-MK-E |
| Country of origin | China |
| Guaranteed software updates until | unknown |
| Brand | Casio |
| Colour | black |
| Calculator Type | Engineering/Scientific |
| Power source | Battery Powered |
| Model name | Limited Edition (Monkey) |
| Material | Plastic |
| Display type | LCD |
| Manufacturer | Casio |
Who Should Buy?
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Students
Ideal for high school and college students needing advanced functions for math, physics, and engineering courses.
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Professionals
Useful for scientists and engineers requiring precise calculations and a variety of mathematical functionalities.
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Exam Takers
Complies with exam regulations and offers features beneficial for standardized tests in math and science.
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Beginners
Novices may find the range of functions overwhelming and prefer a simpler, more user-friendly calculator.
Product Description
Casio FX-991DE CW ClassWiz Technical Scientific Calculator with Art Case Space Monkey German Menu Guide Limited Edition
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Customer Questions & Answers
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Question:
What is the main feature of the FX-991DE CW calculator?
Answer: It boasts a high-resolution grayscale display and over 680 functions designed for advanced scientific calculations. -
Question:
Can the calculator solve equations and inequalities?
Answer: Yes, it can solve polynomial equations up to the 4th degree and complex equation systems with exact values. -
Question:
Does it have a visual aid for results?
Answer: Yes, the QR code function allows you to visualize results on a smartphone or tablet, enhancing data interpretation.
Casio FX-991DEX-CASE-MK-E Editorial Review
The Casio FX-991DE X ClassWiz Scientific Calculator has garnered a positive reception among users, particularly for its advanced functionality and user-friendly design. Users appreciate its natural display, which allows for more intuitive problem-solving as it presents equations and calculations in a way that closely resembles how they are written on paper. This feature reduces the learning curve for students and professionals alike, making it easier to understand complex equations. Additionally, users highlight the extensive range of features available, from basic arithmetic to advanced functions such as calculus, statistics, and matrix operations. The calculator's ability to handle multiple calculations simultaneously is also frequently praised, as it enhances productivity during exams and study sessions. While the FX-991DE is generally well-received, some users mention that the button layout can take some time to adjust to, especially for those who are transitioning from different models. However, many users feel that the benefits of its advanced capabilities far outweigh this minor inconvenience. Overall, the Casio FX-991DE X ClassWiz is regarded as a robust tool for both academic and professional settings, praised for its functionality, ease of use, and clear display. **
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Pros
- Natural display for intuitive problem-solving
- Extensive range of features (calculus, statistics, matrices)
- Ability to perform multiple calculations simultaneously
- User-friendly design enhances productivity
Cons
- Button layout may require adjustment for new users
Platform Trust & Buyer Confidence
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Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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Anke
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“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
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Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
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Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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Important information
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DJF 8140
Order now and get it around Tuesday, September 29
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Fastest cross-border delivery
Features & Benefits
- World's first high-resolution grayscale display with adjustable brightness.
- 680+ functions including advanced calculus and matrix calculations.
- Natural display for easy representation of mathematical expressions.
- User-friendly operation with intuitive button design and menu navigation.
- QR code function for visualizing results on smartphones or tablets.
- Enhances learning and simplifies complex equations for students.
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