This is a CASIO fx-573ES. I bought it 10 years ago and it shows signs of use, but it still works well. 【High-Function Scientific Calculator】 The CASIO fx-573ES is a high-performance scientific calculator equipped with a natural display function. It allows for intuitive mathematical calculations, making it widely used by students and professionals alike. 【Convenient Cover Included】 This calculator comes with a dedicated cover, which is convenient for carrying and storage. The cover has a printed list of formulas and functions, which is helpful for learning and work. 【Various Functions】 It has a variety of mathematical functions and can perform complex calculations smoothly. It is particularly strong in function calculations and statistical calculations. - Brand: CASIO - Model: fx-573ES - Type: Scientific Calculator - Function: Natural Display - Accessories: Cover