Keep a permanent record of calculations with this desktop calculator. The two-color high-speed ink ribbon printing system makes it easy to distinguish between transactions. Track large numbers with the 12-digit display and use built-in features such as tax and profit margin calculations to make common accounting tasks easier. Durable construction supports daily use and the currency conversion feature assists with international accounting transactions. Correct mistakes with the backspace key and store a writing utensil in the pen holder to easily take manual notes. Colored buttons make it simple to differentiate between functions plus the included paper roll allows for out-the-box use. Featuring a built-in clock and calendar this Canon adding machine conveniently keeps track of time.