Deluxe, commercial quality two-color ribbon printer with clock/calendar feature and 4.8 lines per second printing. FEATURES Extra Large Display - 12-digit (17.0 mm) blue fluorescent display with punctuation Heavy Duty Ribbon Printer - prints at approximately 4.8 lines/sec. in two colors (positive numbers in black, negative numbers in red) on standard size paper rolls. Grand Total - adds the grand total of several calculations such as the total prices times units on an invoice. Mark-Up Key - is used to perform mark-ups, cost/sell/margin calculations, percent changes, and automatic add-on/discounts. Average Key - is use to find the "mean" or average. Calendar / Clock Function - displays and prints date and time. 4-Key Memory - includes memory plus, memory minus, recall and clear memory keys. Additional Features - include floating (F) or fixed decimal (6-3-2-1-0), add (A) and constant (K) modes, item count, and round up/down/off selector. Prints on standard paper roll and operates on AC power.