Canon Office Products MP21DX Business Calculator Quick and quiet, this printing calculator provides crisp, professional printouts Positive numbers are printed in black while negative numbers appear in red for fast and easy identification The contoured design of each key top has been developed to fit your fingertips, ensuring impressive speed and comfort 12-digit print/display calculator Easy-to-read fluorescent display High speed ink ribbon printer (3.5 lines per sec) 2-color printing Tax calculation keys