--- product_id: 669442363 title: "FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black" brand: "casio" price: "€ 63.11" currency: EUR in_stock: true reviews_count: 5 category: "Casio" url: https://www.desertcart.be/products/669442363-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401-functions store_origin: BE region: Belgium --- # 2-line high-res dot matrix display Dual solar & battery power 401 functions packed FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black **Brand:** casio **Price:** € 63.11 **Availability:** ✅ In Stock ## Summary > 🔢 Power Your Calculations Like a Pro — Don’t Get Left Behind! ## Quick Answers - **What is this?** FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black by casio - **How much does it cost?** € 63.11 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/669442363-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401-functions) ## Best For - casio enthusiasts ## Why This Product - Trusted casio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual Power Efficiency:** Stay powered up anywhere with solar energy complemented by battery backup—no interruptions during critical tasks. - • **Multi-Replay Function:** Instantly recall and edit previous formulas to save time and avoid repetitive input—boost your productivity. - • **Comprehensive 401 Functions:** Master complex calculations effortlessly with an extensive function library tailored for engineering and science pros. - • **Crystal Clear 2-Line Display:** View expressions and results simultaneously on a high-resolution dot matrix screen for error-free calculations. - • **Exam-Ready Non-Programmable Design:** Approved for all major engineering exams, combining powerful features with compliance for stress-free test days. ## Overview The Casio FX-991MS 2nd Gen is a sleek, non-programmable scientific calculator featuring 401 functions, a dual power system (solar and battery), and a sharp 2-line dot matrix display. Designed for professionals and students alike, it offers advanced math capabilities including statistics, matrix calculations, and unit conversions, all packed into a lightweight, durable design perfect for exams and everyday use. ## Description Product Description Non Programmable. Number of functions : 401. Digits: 10 + 2 digits (10-digit mantissa + 2-digit exponential display). Dot matrix display: High-resolution screen provides beautiful looking graphs every time. Regular percent: Regular percentage calculations. Multi-replay: Quick and easy recall of previously executed formulas for editing and re-execution. Solar and battery: Solar powered when light is sufficient, battery powered when light is insufficient. Plastic keys: Designed and engineered for easy operation. S-V.P.A.M. (Super Visually Perfect Algebraic Method): All the features of the existing V.P.A.M. series plus a new 2-line display and a useful Replay function. All this helps to make mathematics easier to use and easier to understand than ever before. STAT-data editor: Back-step viewing and editing of input data. Scientific constants: You can use constant symbols used in physics, science classes. Base-n calculation: Binary/Octal/Hexadecimal. Basic mathematical Functions: Trigonometric, exponential logarithmic, etc. Basic statistics: Standard statistics functions such as Mean, SUM, Standard deviation and Regression Differentiation. Metric conversion function: You can convert a number in one unit to a number in a different unit. Matrix equation, Integration, complex number calculation, non graphing. Dimensions(D × W × H): 161.5×77×11.1mm. Weight: 95g. Legal Disclaimer “CASIO” is the registered trademarks in India of CASIO COMPUTER CO., LTD., JAPAN. Any infringement of the registered trademarks or other intellectual property rights of the right holder shall be subject to appropriate legal action by the right holder. Appario Retail Private Limited, Bappa Associates and Crystalarc Lifestyle are the authorized online sellers for Casio calculators on this online portal. Review: Tadellos. - Er funktioniert einwandfrei, und wenn jemand das zweizeilige Display im klassischen Stil schätzt ist dieser Rechner eine gute Wahl. Man merkt aber schon anhand des Funktionsumfangs dass er schon in die Jahre gekommen ist und definitiv ein Design der 90er ist. Da ich aber Rechner sammle bin ich froh einen neuen abgestaubt zu haben. Review: Calculator GOAT - Been using it for almost 3 years, still as good as new. Provides almost all features required for any engineering exam. It has no such programming or very good memory features, so it is allowed for all engineering semester exams. Great product overall. ## Features - Calculator ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07TTGZWS1 | | Best Sellers Rank | 121,347 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 151 in Scientific Calculators | | Box Contents | 1 Calculator, 1 Warranty Card With Serial Number, 1 Warranty Term Sheet, 1 User Manual | | Brand | Casio | | Brand Name | Casio | | Calculator Type | Engineering/Scientific | | Colour | Black | | Customer Reviews | 4.4 out of 5 stars 4,839 Reviews | | Display Type | LCD | | EU Spare Part Availability Duration | 3 Years | | Enclosure Material | Plastic | | Item Dimensions L x W | 16.2L x 7.7W centimetres | | Item Type Name | Scientific | | Item Weight | 95 Grams | | Manufacturer | Casio | | Manufacturer Part Number | C77 | | Model Name | FX-991MS-2 | | Model Number | FX-991MS-2 | | Number of Batteries | Nonstandard Battery batteries required. (included) | | Number of batteries | Nonstandard Battery batteries required. (included) | | Power Source | Solar Powered | | Power source | Solar Powered | | Screen Size | 7 Inches | | Screen size | 7 Inches | | Unit Count | 1.0 count | ## Product Details - **Brand:** Casio - **Calculator Type:** Engineering/Scientific - **Colour:** Black - **Display type:** LCD - **Material:** Plastic - **Model name:** FX-991MS-2 - **Number of batteries:** Nonstandard Battery batteries required. (included) - **Power source:** Solar Powered - **Product dimensions:** 16.2L x 7.7W centimetres - **Screen size:** 7 Inches ## Images ![FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black - Image 1](https://m.media-amazon.com/images/I/61HXfPgQcqL.jpg) ![FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black - Image 2](https://m.media-amazon.com/images/I/61oVkxpICRL.jpg) ![FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black - Image 3](https://m.media-amazon.com/images/I/61SzlNayopL.jpg) ![FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black - Image 4](https://m.media-amazon.com/images/I/61SGHVDpjvL.jpg) ![FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black - Image 5](https://m.media-amazon.com/images/I/61YcjVy-tGL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Tadellos. *by A***E on 25 December 2025* Er funktioniert einwandfrei, und wenn jemand das zweizeilige Display im klassischen Stil schätzt ist dieser Rechner eine gute Wahl. Man merkt aber schon anhand des Funktionsumfangs dass er schon in die Jahre gekommen ist und definitiv ein Design der 90er ist. Da ich aber Rechner sammle bin ich froh einen neuen abgestaubt zu haben. ### ⭐⭐⭐⭐⭐ Calculator GOAT *by S***T on 19 June 2026* Been using it for almost 3 years, still as good as new. Provides almost all features required for any engineering exam. It has no such programming or very good memory features, so it is allowed for all engineering semester exams. Great product overall. ### ⭐⭐⭐⭐⭐ Works as it should *by L***S on 7 June 2026* Works as it should ## Frequently Bought Together - Casio FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display - Casio MJ-12D 150 Steps Check and Correct Desktop Calculator --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/669442363-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401-functions](https://www.desertcart.be/products/669442363-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401-functions) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-17*