This is the best selling Casio HL820VER and ideal for those needing a pocket calculator with currency conversions for home, work or holidays. It is ideal for traveling or keeping in a pocket or handbag as it is small and has a hard protective case which gives added security. The HL820VER has an 8 Digit Extra Large LC-Display and is battery powered. It has currency conversions back to national currency. It does Percentage calculation and has constant memory which is stored even after being switched off. There is no battery waste unlike other calculators as after approximately 6 minutes it switches off if it has not been used. It features a protection flap (to the back turnable 360°) and Euro Conversion. It also has Independent Memory and Percentage Calculation.