Heavy-duty 12-digit calculator features a large, digitron display. Two-color ink ribbon printer prints 4.4 lines per second on 2-1/4 inch plain paper. Functions include cost/sell/margin calculation, floating and fixed (0-6) decimal, item counter, independent memory, printing reference numbers, tax calculation, automatic constants, independent add register, grand total, MU/MD, right shift key for quick correction, round off, round up, cut off and ADD mode. AC operation. Standard 2-1/4 inch paper is included. It weighs 3.7 lb.