Victor 1460-4 Extra Heavy-Duty Printing Calculator, Black/Red Print, 4.6 Lines/SecFast 4.6 lines per second heavy-duty ribbon printer. Large 17 mm fluorescent display is easy to read in low light. Well-spaced contoured keys. Contemporary style with built-in paper arm. Power Source(s): AC; Display Notation: Numeric; Number of Display Digits: 12; Memory: 4-Key.