Whether in an office setting or at home, the EL2630PIII is the perfect 12-digit printing calculator for the occasional user. The extra-large display makes for easy viewing. The keys are engineered with a Microban® antimicrobial agent that reduces the growth of microbes and bacteria that cause discoloration and odors. You will always be able to count on the fast and reliable 4.8 lines-per-second ribbon printer. Other functions include: mark up key for calculating cost-sell-margin calculations, tax keys, grand total key, and more. Power Source(s): AC; Display Notation: Numeric; Number of Display Digits: 12; Memory: 4-Key.