This Casio Mini desktop printing calculator is perfect for home and office use. It features a large, easy-to-read display and a host of mathematical functions. This calculator prints 2.0 lines per second with 2-Color printing and Cost/Sell/Margin functionality. The "Check and Correct" feature lets users inspect up to 150 calculation steps and print after corrections. This calculator functions on either of two power sources; direct power from adapter (not included) or 4 AA batteries.