--- product_id: 721321895 title: "FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display" brand: "casio" price: "5059 som" currency: KGS in_stock: true reviews_count: 8 category: "Casio" url: https://www.desertcart.kg/products/721321895-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401-functions store_origin: KG region: Kyrgyzstan --- # Water-resistant key printing 401 versatile functions Dual power: solar + battery FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display **Brand:** casio **Price:** 5059 som **Availability:** ✅ In Stock ## Summary > 🧮 Elevate your calculations—where precision meets durability! ## Quick Answers - **What is this?** FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display by casio - **How much does it cost?** 5059 som with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/721321895-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 - • **Built to Endure:** Drop-resistant body and water-resistant key printing ensure longevity through every hustle. - • **Exam-Ready & Reliable:** Approved for major Indian exams like JEE & GATE, backed by 3 years warranty for peace of mind. - • **Unstoppable Power Duo:** Solar & battery combo keeps you calculating without a hitch, even in low light. - • **Master of 401 Functions:** From trig to matrices, conquer complex problems with a single tool trusted by engineers. - • **Crystal Clear Dual-Line Display:** Dot-matrix screen lets you view and edit long equations effortlessly—no more guesswork. ## Overview The Casio FX-991MS 2nd Gen is a non-programmable scientific calculator featuring 401 functions, a dual-line dot-matrix display, and a robust drop-resistant body with water-resistant key printing. Powered by both solar and battery, it ensures uninterrupted performance. Ideal for engineering and professional use, it supports advanced calculations including trigonometry, statistics, integrals, and matrices. Trusted for exams like JEE and GATE, it comes with a 3-year all-India warranty, combining reliability with sleek, compact design. ## Description From the manufacturer Non-Programmable Scientific Calculator – CASIO fx-991MS (2nd Edition) Sleek and attractive design: Gives a beautiful and elegant look. Wear Resistance printing: The functions name doesn’t fade even after long usage. Dot Matrix Display: Dot-Matrix High-Resolution Display for easy viewing of long expressions. Casio fx-991MS is a non-Programmable scientific calculator with 401 functions. The 2nd edition of the calculator comes in sleek and attractive design. Calculator has dot-matrix display for easy viewing and entering of long algebraic functions and equations. it can solve Trigonometrical, Statistical, Integral, Differential, Matrix, Vector calculations and many more... Calculator is made with wear resistance printing and has drop resistant body. This is powered by Solar & Battery both: Solar powered when light is sufficient, battery powered when light is insufficient. Number of Functions : 401 401 Functions for easy and fast Calculations for all your mathematical and engineering problems Trigonometrical Calculations Calculator can perform all trigonometrical and hyperbolic functions. Differential and Integral Calculations Dedicated key to solve definite differential and integral problems. Statistical & Regression Calculations Calculator can easily perform statistics, regressions and distribution problems. Matrix & Vector Calculation Solve up to 3 by 3 matrix and 3-dimensional Vector problems Multiple Mode Single Key to change mode for Matrix, Statistics, Regression calculation etc. SHIFT/Alpha keys for easy operation Some functions are written in Yellow and Red colors. Use Shift key to execute yellow colored functions and Alpha key for red colored functions. Sleek and Stylish Body Calculator has sleep design with curved edges which makes it compact, attractive, and easy to carry. The functions are printed with water resistant printing. Review: ! Excellent Casio ! - 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. Review: Solid calculator for students - Solid calculator for students — does the job without drama As an engineering student, the Casio fx-991MS has been a lifesaver for me. It covers all the essential functions — complex numbers, matrices, integration, stats, etc. — without going overboard. The button feedback is decent, the display is clear (dual-line is a plus), and it runs on both solar + battery, so you never get stuck during an exam. It's not flashy like the fx-991EX, but it’s reliable and familiar. And honestly, sometimes that’s all you need. It’s accepted in most Indian exams (JEE, GATE, etc.), which is a big win. Only downside? No high-resolution display and feels a bit "2000s retro" — but that’s part of the charm. TL;DR: Great value, trusted brand, exam-ready — go for it if you don’t need the fancy features of the newer models. ## Features - Drop resistant body with water resistant printing on Keys - Multi-replay: Quick and easy recall of previously executed formulas for editing and re-execution - 3 Years All India Manufacturer Warranty - Country of Origin: Thailand ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07TTGZWS1 | | Best Sellers Rank | #633 in Office Products ( See Top 100 in Office Products ) #9 in Scientific | | Box Contents | 1 Calculator, 1 User Manual, 1 Warranty Card With Serial Number, 1 Warranty Term Sheet | | Brand | Casio | | Brand Name | Casio | | Calculator Type | Engineering/Scientific | | Colour | Black | | Country of Origin | Thailand | | Customer Reviews | 4.4 out of 5 stars 4,882 Reviews | | Display Type | LCD | | EU Spare Part Availability Duration | 3 Years | | Enclosure Material | Plastic | | Item Dimensions L x W | 16.2L x 7.7W Centimeters | | Item Type Name | Scientific | | Item Weight Unit of Measure | 95 Grams | | Manufacturer | Casio, Casio India Co Pvt Ltd, A-41, 1st Floor, MCIE, Mathura Road, New Delhi-110044 | | Manufacturer Contact Information | Casio India Co Pvt Ltd, A-41, 1st Floor, MCIE, Mathura Road, New Delhi-110044 | | Manufacturer Part Number | C77 | | Model Name | Scientific | | Model Number | FX-991MS-2 | | Number of Batteries | Nonstandard Battery batteries required. (included) | | Packer Contact Information | Casio India Co Pvt Ltd, A-41, 1st Floor, MCIE, Mathura Road, New Delhi-110044 | | Power Source | Battery Powered | | Screen Size | 7 Inches | | Screen Size Unit of Measure | 7 Inches | | Unit Count | 1 Count | | Warranty Description | 6 months additional warranty for products registered online How to avail Warranty? Register your product on https://register.casio.in 3 years all India Manufacturer Warranty from the date of purchase To claim your warranty, produce original bill copy/invoice at authorized Casio service center (Warranty card & stamp is not mandatory for online purchases) For any service related enquiries and feedba… | ## Product Details - **Brand:** Casio - **Colour:** Black - **Calculator Type:** Engineering/Scientific - **Power Source:** Battery Powered - **Screen Size:** 7 Inches ## Images ![FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display - 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 - 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 - 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 - 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 - Image 5](https://m.media-amazon.com/images/I/61YcjVy-tGL.jpg) ## Questions & Answers **Q: What is difference between fx 991ms and fx 991 es plus?** A: No big difference but whether my knowledge ES is not applicable for all competitive exam . Yes ES has more functions than MS . **Q: This product has stopped functioning in certain calculations can it be repaired** A: Yes , **Q: Along with solar panels, it has battery / cell options** A: S it has both battery and cell **Q: Can i use in civil engineering** A: Of course it can be done on this calculator. But better use FX-991 ES or ES+ for that. Hope you helpful.. ## Customer Reviews ### ⭐⭐⭐⭐⭐ ! Excellent Casio ! *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. ### ⭐⭐⭐⭐ Solid calculator for students *by Y***S on 24 July 2025* Solid calculator for students — does the job without drama As an engineering student, the Casio fx-991MS has been a lifesaver for me. It covers all the essential functions — complex numbers, matrices, integration, stats, etc. — without going overboard. The button feedback is decent, the display is clear (dual-line is a plus), and it runs on both solar + battery, so you never get stuck during an exam. It's not flashy like the fx-991EX, but it’s reliable and familiar. And honestly, sometimes that’s all you need. It’s accepted in most Indian exams (JEE, GATE, etc.), which is a big win. Only downside? No high-resolution display and feels a bit "2000s retro" — but that’s part of the charm. TL;DR: Great value, trusted brand, exam-ready — go for it if you don’t need the fancy features of the newer models. ### ⭐⭐⭐⭐⭐ Nice product *by V***H on 7 November 2025* This is nice product which I think about this product, i use this calculator in college or this is ease to use or this is portable size of this product is like mobile phone this product use for students ## 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.kg/products/721321895-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401-functions](https://www.desertcart.kg/products/721321895-fx-991ms-2nd-gen-non-programmable-scientific-calculator-401-functions) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-05-01*