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. Power Source(s): AC; Display Notation: Numeric; Number of Display Digits: 12; Calculators Memory: 4-Key/2 Sets.