The Casio fx-991 CW ClassWiz is the new upgraded version of the Casio fx-991 EX (Casio's most advanced scientific calculator), containing additional features, to include a high definition display and improved menu navigation. Approved for Key stages 3, 4 and 5, recommended for Advanced GCSE, A/AS level and Highers. Allowed in every UK exam where a calculator can be used.

• The large Natural Textbook Display shows mathematical expressions like roots and fractions as they appear in your textbooks which increases comprehension because results are easier to understand.
• Clip-on on protective hard cover included
• 540+ functions
• Dual powered, solar with battery backup and Auto power-off