Battery powered (1 x AAA included) , approved for use within Key Stages 3 and 4 and includes GCSE and exams where calculators are allowed, 290+ functions, 9 memories, new crystal-clear display, scrolling menu navigation, simplified keys with main functions, easy-to-use number formatting. The Casio fx-83GTCW is the new upgraded version of the Casio fx-83GTX, containing additional features such as a New easy to use UI (User Interface) , quick navigation and access of more functionality, Intuitive key layout, High definition 4 gradation display, Durable and reliable, comfortable and easy to hold and use, QR code to display graphic representation on smartphones. Allowed in every UK exam where a calculator can be used. Recommended and approved for Key Stages 3 & 4 (including GCSE, National and Higher, Junior and Leaving) The large Natural Textbook Display (Natural-V.P.A.M.) shows mathematical expressions like roots and fractions as they appear in your textbooks which increases comprehensio