This 12-digit Commercial Calculator features a large, easy-to-read 17mm fluorescent display with automatic three-digit punctuation. Print 4.8 lines per second in two colors with positive numbers in black and negative numbers in red. Two individual, four-key memory bank simplifies many business calculations. Grand total adds the grand total of several calculations such as the total prices multiplied by units on an invoice. Multiple Use key simplifies business calculations to save time and increase efficiency by handling functions like margin, markup, selling prices, costs, percent changes, and more. Functions also include memory clear, recall, plus/minus entry keys, automatic item count, automatic tax calculations, plus and minus entry keys, constant mode selector, add mode, round off/up/down selector, change sign key, and paper-saving print/nonprint selector. Paper holder arm is retractable. Calculator runs on AC power and weighs 4.41 lb.