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.
DIY Toast-Shaped Silicone Mold for Handmade Soap - Square Soap Making Mold
$105.00
Kindergarten Sponge Stamp Set – Mushroom-Head Circular Printing Tools for Kids' DIY Art and Painting Kits
$3.50
Heavy-Duty Lifting Chain Set – Manganese Steel Chains with Hooks, Rings, and Hoist Accessories
$198.00
Car Tire Stone Removal Tool, Multi-Function Groove Hook for Portable Tire Picking and Cleaning
$11.50
m Dogs Strap Auto Retractable Dual Dog Leash With
$199.92
Traditional Wooden Sheepskin Rattle Toy – Safe for Teething Newborns, Handcrafted Baby Bell Shaker
$17.80
Soilless Cultivation Equipment Plant Factory Display Rooftop Hydroponic Pipe System for Leafy Vegetables and Fruits, Type A Planting Rack
$2,620.16
Premium Ceramic Tea Canister and Gift Box Set - Empty Packaging for Black Tea, Pu'er, White Tea, and Biluochun
$121.00
Posture-Correcting Hole-Grip Pencils for Grade 1 - Triangular Barrel, Break-Resistant, Non-Toxic HB for Daily Writing and 2B for Exams
$3.02
Genuine OEM AC Blower Motor Heater Fan for Buick Excelle GT, Cavalier, and Monza
$255.00
TA1 TA2 Titanium Capillary Tubes - Small Diameter Titanium Pipes - GR5 Titanium Alloy Tubes
$240.00
Industrial Spray Painting Wipe Cloth Auto Bake Finish Film Application Degreasing Cloth Non-Woven Absorbent Paper Lint-Free Paper Electrostatic Dust Removal Paper
$75.66
US Standard Buttress Thread Inserts 22ER 16ER 11NR 16 10 12 8ABUT Internal 7 External 45 Degree
$43.20
Coating Workshop Cleaning Rags GAE Industry White Scrap Cloth Nylon Machine Cloth Blocks Industrial Glue Removal Furniture Cleaning
$96.31
Natural 8A Yellow Tiger Eye Loose Beads - Round Cat's Eye Bracelet for DIY Jewelry Making
$17.28
Paper Blending Stumps Art Set for Highlighting, Sketching, and Smudging - Professional Drawing Tools for Artists and Beginners with Rice Paper Details and Oil Pastels
$6.80
Rubber Speed Bump 1000x350x40mm Herringbone Pattern
$96.89
![Xian Kan Yun Shu [Cloud Lark] Elegant Brush Washer, Hand-Painted Orchid and Sparrow Design under Glaze, Ceramic Water Pot](https://www.gosteppe.com/cache/small/product/269176/legacy-main-b83d0e5d0aba33de561a2b48.webp)
Xian Kan Yun Shu [Cloud Lark] Elegant Brush Washer, Hand-Painted Orchid and Sparrow Design under Glaze, Ceramic Water Pot
$21.20
Cable Organizer Hook-and-Loop Straps for Data/Charging Cables, Laptop Power, Mouse, Headphones, and Under-Desk Network Wiring
$7.48
Power Strip Organizer Box, Desktop Socket Concealment Case for Charging Cables and Power Cords, Hidden Storage Shelf
$21.93
Automatic Dairy Beverage Filling Machine - Fully Automatic Equipment for Milk, Soy Milk, and Drink Bottling
$1,316.00
Compact Invisible Retainer Case - Leak-Proof Sealed Storage Box for Children's Orthodontic Aligners
$12.50
07521 Scouring Pad Roll for Woodworking, Furniture, Paint Sanding, Metal Deburring, and Brushed Finish - Purple 600 Grit
$81.00
Shiya Insulated Display Cabinet, Constant Temperature Warmer for Commercial Use, Crispy Pork Belly, Roast Duck, Roast Chicken, and Cooked Food
$388.00
Wooden Soap Trimmer with Drawer, Soap Planer and Edge Shaper, Free Shipping
$32.00
Hell Training Rock Guitar by Shinichi Kobayashi Electric Guitar Textbook Tutorial Speed Picking
$106.00
Zhao Mengfu Running-Cursive Calligraphy Copybook - Spring River in the Flower Moon Night Tang Poems for Tracing and Practice
$16.00
Precision Transcription Service for David Tao's 'Small Town Girl' Saxophone Arrangement by Mr. Chui, Three-Piece Set
$10.00
CANDLE.LAB | Small Wax Melting Pot 180ml with Stainless Steel Measuring Spoon for DIY Scented Candles 26
$16.00
Chengdu University City Laboratory Exhaust Piping and High-Purity Gas Pipeline Engineering - Consultation Welcome
$33,610.00
![[10 Boxes] M&G Staples 24/6 Universal No. 12 Stapler Pins, Uniform Binding Nails, Office Stationery, Small Stainless Steel Staples](https://www.gosteppe.com/cache/medium/product/393106/legacy-main-d2d0aeb221cb42ffcbb9d83a.webp)
![[Customizable] Blank DIY Bookmarks - Thickened Hard Cardstock in Multiple Sizes with Tassels for Kindergarten and Elementary Art, Calligraphy, and Reading Gifts](https://www.gosteppe.com/cache/medium/product/386159/legacy-main-05a2e5e73e5ac60017fbef5e.webp)
