Calculator EL-243S, Large 8-Digit Display, Twin Power Source (battery and solar), Lift-back hard cover, Percentage Key, Root Key, Sign Change, Since the introduction of the first electronic desktop calculator, SHARP has led the way in the field ofcalculator technology. A history of superior engineering, advanced functions, and innovative technologies has made SHARP calculators the choice in all fields, the world over. Features, Currency conversion: no, Currency Conversion factors: no, Cost-Sell-Margin Calculation: no, VAT calculation +/-: no, Memory 1 (3 Keys), Thousand Subdivision no, Percentage count (%) yes, Square root (√): yes, Change of character: yes, Other, Automatic shutdown: yes, Solar cells: yes, Operating battery: LR54 x 1, Dimensions in cm: 6.4 x 10.5 x 1.1, Weight in grams: 51.