Feature●This is a scientific calculator that with multiple functions with intuitive interface - perfect for beginner and advanced courses, high school or college●It features a screen HD and large enough to be able to display 10 digits, 2 rows, allowing you to see calculations and corrections in high detail.●280 FUNCTIONS-Including Arithmetic Calculations, Fraction Calcultaitons, Degrees, Minutes, Seconds Calculations, FIX, SCI, RND, Independent Memory, Trigonometric/Inverse Trigonometric Functions, Hyperbolic/Inverse Hyperbolic Functions, Square/Cube Roots...●It has comfortable buttons●2xAG13 Button battery includedDescription PN-2891 Engineering/Scientific Calculator with multiple functions, with a screen DH and large enough and comfortable touch