Fully working, as on pictures. The Casio Fx-991ex Classwiz Advanced Engineering Scientific Calculator is a handheld device with a regular-sized display and key size. It is powered by batteries and features an LCD display, backlight, and calculus functions. This model, Casio fx-991EX, is ideal for students and professionals in the field of engineering and science, providing advanced mathematical capabilities and ease of use. Its compact size and reliable power source make it a convenient tool for solving complex equations and calculations on the go.
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