With sophisticated features such as tax & profit margin calculations, a 12-digit display & high-end durability, this printing calculator is always ready for business. A fast, two-color, high-speed ink ribbon printing system ensures quick & efficient calculations. When you're not calculating numbers, a built-in clock & calendar make it a very useful addition to your desktop. Double-check function helps minimize errors for more accurate calculations. Backspace button allows you to quickly correct minor mistakes for time-saving operation. Printing calculator also includes currency conversion, tax calculation, business calculation, sign change, grand total, memory function & more.