Handy, standard-sized pocket calculator (7 x 12 x 1 cm) with fine colored line hatching. Solar-powered with backup battery (included) and automatic shut-off. Comes with a hinged protective case. - CASIO offers a larger desktop calculator (10.1 x 15.5 cm), the MS-20YC, in the same design. Display: 10-digit display 5.9 x 2.0 cm with with calculation function indicator and 1,000s separators. Digit height 1.4 cm. Keyboard: Smooth-acting plastic keys. With backspace key for deleting the last digit(s). +/- keys for changing the sign. With key rollover. Advanced percentage calculation: Thanks to CASIO's unique input logic, the absolute value of the % is displayed before before markup on the base. Other calculations: Tax calculations with display of gross, net, and tax amounts (tax rate can be saved). Time calculation in hour:minute:second format and conversion to decimal format. Margin markup calculation via % key. Square root calculation. Constant calculation. 4-key memory.