The Casio FX-83GTX features a clearer display, simpler menus a faster processor, 14 additional functions and is available in multiple colours.With a large textbook display, mathematical expressions such as roots and fractions appear as they would within a textbook making it easier to use and understand. This upgraded version of the GTX includes several new features including but not limited to; ratio, advanced statistics and a digit separator.Perfect for use in Key Stages 3 and 4 as well as GCSE, National, Higher, Junior and Leaving levels of education. . Large clear natural textbook display/ Natural V.P.A.M. Slide on hard protective case. Battery powered (Includes 1 x AAA Battery). Prime Factorisation. Enhanced calculations of mathematical priorities. Auto power off. Recurring decimal display. 274 Functions available. New features include; Ratio, Digit Separator, Advanced Statistics, Advanced Tables and Variables List. Recommended for use within KS 3 and 4, GCSE, National and Higher, Junior and Leaving certificates. Approximate dimensions (mm) H 14 W 77 D 166