Casio Fx-991Ex Engineering/Scientific Calculator - Black

The Casio Fx-991ES Plus-2nd Edition is an exceptional tool for anyone in need of a reliable and versatile scientific calculator. As a student of engineering, I’ve found this model to be an absolute lifesaver for solving complex problems efficiently.Comprehensive Functionality:It covers everything from basic arithmetic to advanced functions like calculus, matrix operations, and complex numbers. The 417 functions available ensure that it meets the demands of both students and professionals.Natural Textbook Display:The Natural Display makes it incredibly easy to input and review equations as they appear in textbooks. This feature is a huge plus for clarity and error-checking.Durability and Design:The build quality is robust, and the design is sleek and compact. It’s lightweight, making it easy to carry around, yet feels sturdy enough to withstand daily use.User-Friendly Interface:Despite its extensive features, the calculator is intuitive to use. The buttons are responsive, and the layout is logical, making even complex calculations straightforward.Solar and Battery Powered:The dual power source ensures it works seamlessly in different environments, whether you’re under bright classroom lights or in dimly lit settings.Affordable Pricing:Considering its extensive capabilities, the calculator offers fantastic value for money. It’s a worthwhile investment for anyone serious about technical or scientific work.Verdict:The Casio Fx-991ES Plus-2nd Edition has exceeded my expectations. Whether you're a student tackling exams or a professional needing quick, accurate calculations, this calculator is the perfect companion. Highly recommended!

It's like having a math wizard in your pocket, ready to assist you at any moment. The buttons are perfectly arranged and labeled, making it a breeze to navigate through functions and operations. No more fumbling around or getting lost in an ocean of confusing symbols - this calculator keeps it simple and straightforward. It's like having a superhero cape draped over your shoulders, boosting your confidence and turning you into a mathematics virtuoso.Durability-wise, this calculator is a beast. Made with sturdy materials, it can endure accidental drops, backpack jostling, and even the occasional pencil poke without breaking a sweat. It's a trusty companion that will see you through math classes, exams, and countless problem-solving adventures.

Good price and nice quality

Good

really good quality and amazing for exams

Very useful

The quality is amazing, solar charging, all advanced options are available.The price also was very reasonable compared to the market.

After being ripped off by Banggood, which sent me a fake first edition of this calculator, I purchased this one from Amazon / Casio. When you have the real thing vs the fake one you see the difference.1-functionality seems to be the same with fake and real one,2-Huge difference in clarity of the LCD. The fake one is hopelessly dim/lacking contrast,3-There is no battery in the battery compartment of the fake one, neither any wire connections/holder contact etc. Just a gaping hole. Obviously with the real one you get the battery sitting there nicely4-The general built quality of the real one is noticeably much better than the fake one.5- Last but not least, the price for such a fine machine is unbelievably attractive. Bravo Casio :) Recommend it to everybody wholeheartedly .