Casio Heavy Duty 12 Digit Waterproof and Dustproof Calculator Detachable and washable keypad Level of Protection: IP54 Two Way Power Percentage Calculation incl. Profit Margin Profit Calculation (Cost, Sell, Margin) TAX-Calculation 3-Key Memory 3 Digit Comma Markers Dimensions (H x W x L): 3,6 x 14,5 x 19,5 cm