The ELVX2652H 12-digit printing calculator is perfect for the everyday advanced user. Extra heavy-duty durability is perfect for power users and ensures years of use. You can count on the fast and reliable 4.8 lines-per-second ribbon printer. Professional keyboard with sculpted keys are designed for fast and comfortable operation with contoured Plus/Equal and Minus/Equal keys. Features two independent four-key memories. Other functions include: mark-up key for calculating Cost/Sell/Margin calculations, percent changes, automatic add-on/discounts calculations, automatic tax keys, constants in multiplication and division, grand total key, change sign key, large-size add and subtract keys, fully selectable decimal settings, date/non-add key, item count, average key, selectable rounding switches and two independent four-key memories. AC power.