This Casio FX-991 EX Classwiz scientific calculator is a reliable tool for any mathematician or scientist. With its high definition display and unit type, this calculator is perfect for solving complex equations and displaying your work. The calculator is made by Casio, a trusted brand in the industry, and is model FX991EX. It was manufactured in Thailand and comes with one unit quantity. This calculator is ideal for use in various settings, including office equipment, business and industrial settings. It is categorized under calculators and is perfect for anyone in need of a reliable scientific calculator. Get your hands on this Casio FX-991 EX Classwiz calculator today and put your mathematical skills to the test!