12-digit portable printing/display calculator features tax, decimal selector (0-2), three-digit comma marker and currency exchange function. Prints 1.6 lines per second in black. Compact and lightweight calculator features independent memory, nonadd, cost/sell/margin, tax calculation, exchange calculation, automatic constants, simple algebraic logic, round off, and profit margin percentage. Uses 2-1/4" plain paper. AC power with included adapter or four AA batteries (sold separately). Weighs 12 oz.