Small desktop calculator (10.1 x 15.5 x 1.8 cm) with fine colored line hatching. Solar-powered with backup battery (included) and automatic shut-off. With non-slip rubber feet. Display: 12-digit large display 8.0 x 2.7 cm with with calculation function indicator and 1,000s separators. Digit height 1.7 cm. Keyboard: Smooth-acting plastic keys. Key rollover allows for very fast typing. Backspace key for deleting the last digit(s). +/- keys for changing the sign. Double zero key (00). 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. 3-key memory.