The canon mp11dx-2 has the perfect combination of useful and sophisticated features, compact design, for the busy professional. This desktop, two-color printing calculator incorporates profit margin calculation keys that allow you to calculate the selling price or discount, based on the cost and desired profit margin. In addition, the built-in clock and calendar allows you to view the time and date on the display or print them out. Printing calculator features double check function detachable pen holder currency conversion business calculation tax calculation