The FX-991 CW is the new upgraded version of the FX-991 EX, with additional features including high-definition display and improved menu navigation. Approved for use in every UK exam where a calculator is permitted, recommended for Advanced GCSE, A/AS level and Highers, this scientific calculator is allowed in every UK examination. The large Natural Textbook Display (Natural-V.P.A.M.) shows mathematical expressions like roots and fractions as they appear in textbooks for improved learning and comprehension. Dual powered by solar with battery back-up and auto-power off, the calculator features a clip-on protective hard cover and is supplied with a three-year guarantee. High resolution LC display Natural-V.P.A.M textbook display New intuitive key layout and menus, quick and easy to navigate to access more functionality 540+ functions Comes with a clip-on hard case Solar powered with battery back-up Approved for use in every UK exam where a calculator is permitted Permitted in UK school examinations (Key stages 3, 4 and 5, recommended for Advanced GCSE, A/AS level and Highers) Colour: Black