The Casio FX-85GT Plus is the UK's best selling solar powered scientific calculator and is allowed in every UK exam where a calculator can be used. Suitable for use from KS 3, 4 and above, recommended for GCSE, A/AS Level, Standard and Higher. The FX-85GT Plus is dual powered (solar with battery back-up) and is available in a choice of colours. The large natural textbook display (Natural V.P.A.M.) shows mathematical expressions as they appear in your textbooks, which increases comprehension because results are easier to understand.