Color Printing Calculator features a large, 12-digit, digitron display and built-in tax and exchange function. Two-color ribbon printer produces 3.5 lines per second on 2-1/4" plain paper. Calculator offers right shift key, automatic constants, decimal selector (6,4,3,2,1,0A), item counter, subtotal, total, grand total, independent memory, percent key, independent add register, round off, round up, cut off, ADD Mode, cost/sell/margin and item counter. Backspace key allows easy corrections. AC operation. Weighs 3.7 lb.