Casio FX-85GT Scientific Calculator

260 scientific functions, degrees, radians, gradians, square root, fractions, trigonometrics (SIN/COS/TAN), roots & powers, exponents, reciprocals, coordinate conversion, degrees/minutes/seconds, negative indicator, hyperbolics, combinations, permutations, standard deviation, linear regression, logarithmic regression, exponential regression, power regression, quadratic regression, random numbers, prime factorisation, recurring decimals

Natural textbook display, 12 + 2 digit + 12 characters, 2 line display, 260 functions, dual power, multi replay function, verify function, auto power off, sliding protective cover