--- product_id: 669442363 title: "Casio FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black" brand: "casio" price: "255 zł" currency: PLN in_stock: true reviews_count: 5 category: "Casio" url: https://www.desertcart.pl/products/669442363-casio-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401 store_origin: PL region: Poland --- # 2-line high-res dot matrix display Dual solar & battery power 401 functions packed Casio FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black **Brand:** casio **Price:** 255 zł **Availability:** ✅ In Stock ## Summary > 🔢 Elevate your calculations—where precision meets power in every keystroke! ## Quick Answers - **What is this?** Casio FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black by casio - **How much does it cost?** 255 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/669442363-casio-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401) ## 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 - • **Crystal Clear 2-Line Display:** View formulas and results simultaneously on a sharp dot matrix screen, enhancing accuracy and workflow speed. - • **Compact, Lightweight & Durable:** Sleek black design with plastic keys engineered for comfort and longevity, fitting seamlessly into your professional toolkit. - • **Master 401 Functions with Ease:** From trigonometry to statistics, unlock a powerhouse of scientific calculations tailored for precision-driven pros. - • **Dual Power for Uninterrupted Use:** Solar-powered efficiency meets reliable battery backup—never get caught off guard during critical calculations. - • **Effortless Formula Replay & Editing:** Quickly recall and tweak previous calculations with the Multi-replay feature—perfect for iterative problem solving. ## Overview The Casio FX-991MS 2nd Gen is a non-programmable scientific calculator boasting 401 functions and a 2-line high-resolution dot matrix display. It features dual solar and battery power for reliable use, a Multi-replay function for easy formula editing, and supports complex calculations including statistics, matrix equations, and base-n conversions. Lightweight and compact, it’s designed for professionals and students seeking accuracy and efficiency in a classic, durable form factor. ## 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: 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: Nice and new ## Features - Calculator ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07TTGZWS1 | | Best Sellers Rank | 53,514 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 89 in Scientific Calculators | | Box Contents | 1 Calculator, 1 Warranty Card With Serial Number, 1 Warranty Term Sheet, 1 User Manual | | Brand Name | Casio | | Calculator Type | Engineering/Scientific | | Colour | Black | | Customer Reviews | 4.4 4.4 out of 5 stars (4,773) | | 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) | | Power Source | Solar Powered | | 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 ![Casio 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) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *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. ### ⭐⭐⭐⭐ Review *by C***E on 7 October 2022* Nice and new ### ⭐⭐⭐⭐⭐ Review *by T***I on 7 November 2025* It's very useful for engineering students. Various type of critical problem solved by use of this ,trigonometry function, exponential function etc. It is value for money, accuracy is more, easy to use, battery life is better , better button quality. ## 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.pl/products/669442363-casio-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401](https://www.desertcart.pl/products/669442363-casio-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-23*