Large printing calculator features large 12-digit blue fluorescent display and tax keys. Prints 3.0 lines per second in two colors (positive numbers in black, negative numbers in red) on standard-size paper rolls. Calculator offers four-key memory, grand total, markup, cost/sell/margin calculations, percent changes, automatic add-on/discounts, up/off/down rounding settings, item counter and floating or fixed decimal (6,3,2,1,0). AC operation.