The Casio desktop calculators are ergonomically designed for right hand users. The keypad is configured in an innovative staircase design, with 3 degree inclination from right to left side. This causes less underarm torsion and hand wrist rotation, as it adapts to natural finger / hand posture. The staircase key shape enables perfect vertical keystrokes and thus eases the key typing, lessens burden and helps avoiding Repetitive Strain Injuries. Featuring a range of functions this calculator is perfect for everyday use. 12 Digit Ergonomic Compact Desktop Calculator Solar/battery powered Aluminium front plate and extra large anti-slip rubber feet Silent touch plus durable anti-fade plastic keys, markings do not wear, as being injected into the key Numeric keypad configured with 0 key below 1 key Advanced Percentage Calculation, Currency Conversion with 3 storable rates Mark-Up Calculation via % key, Square Root Calculation Constant Calculation, GT Grand Total Sum Memory, Summarising 4-ke