Description
Reviews
| Brand | - |
| Category | Stationery, Educational Electronics & Office Supplies / Calculators |
| Origin | - |
| Brand | CASIO |
| Model Number | fx-991CN X (2026 New Model) |
| Display Type | High-resolution LCD with Natural Textbook Display |
| Language Interface | Simplified Chinese |
| Power Source | Solar Panel + Button Battery (LR44) |
| Functions Count | 552+ Integrated Functions |
| Exam Compliance | Approved for Gaokao and Graduate Entrance Exams |
| Dimensions | 165.5 x 77 x 11.1 mm |
| Weight | Approx. 105g (including battery) |
| Warranty | 1 Year Manufacturer Warranty |
Anonymous
Mar 31, 2026
Rating: 5/5
Perfect for Gaokao Preparation
This calculator is exactly what I needed for my high school exams. The Chinese interface makes it very easy to navigate complex functions, and the screen is crisp and clear even in bright light.
Anonymous
Mar 29, 2026
Rating: 5/5
Upgrade from the old 991ES
The new 2026 model feels much more responsive. The menu system is intuitive, and solving matrix equations is significantly faster than on my old calculator. Highly recommended for engineering students.
Anonymous
Mar 28, 2026
Rating: 5/5
Genuine Product, Fast Shipping
Verified the serial number on the Casio website, and it is 100% genuine. The packaging was secure, and the calculator came with a protective hard case. Very satisfied with this purchase.
Anonymous
Mar 20, 2026
Rating: 4/5
Good value for the price
Does everything advertised. The solar charging works well, so I haven't had to worry about battery life. Only minor issue is that the manual could be more detailed for advanced statistical features.
Anonymous
Mar 07, 2026
Rating: 4/5
Great features, slight learning curve
The functionality is incredible for physics competitions. It took me a day to get used to the new icon-based menu, but once I did, calculations became effortless. The build quality is solid as expected from Casio.
Anonymous
Mar 04, 2026
Rating: 5/5
Essential for College Math
I bought this for my calculus and statistics courses. The ability to solve integrals and display results in natural textbook format saves me so much time during homework and exams.
Q: Can the language be switched to English?
A: No, this specific model is the Chinese version (CN X) and the system language is fixed to Simplified Chinese. Please look for the international 'EX' series if you require an English interface.
Q: Is this calculator allowed in the Chinese Gaokao exam?
A: Yes, the fx-991CN X is fully compliant with Gaokao regulations as it does not have graphing capabilities or programmable memory that violates exam rules.
Q: How do I reset the calculator if I make a mistake in settings?
A: You can perform a full initialization by pressing [SHIFT] -> [9] (Reset) -> [3] (All Data) -> [Yes]. This will restore all factory defaults.
Q: Is this the 2026 new model or an older version?
A: This is the latest 2026 new model (fx-991cncw), featuring updated processing speed and an improved high-resolution display compared to previous generations.
Q: Does it come with a protective case?
A: Yes, the package includes a durable slide-on hard case designed specifically for the fx-991CN X to protect the screen and buttons.
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