This Casio is a Light to Medium Duty 12 Digit Printing Calculator that is packed full of features with 2 Lines Per Second print speed and facility to attach an additional mains adapter to minimize battery replenishmentThe HR-150RCE has a tax calculation function, mark up and mark down function and a backspace key. This Casio desktop calculator also features item counter, Euro conversion, reprint & check & correct functions and is an efficient and reliable way to speed up calculations.The Casio HR-150TEC-W-E Print Display Desktop Calculator has 2 colour printing with positive figures in black, negative in red, and can run from battery or AC mains (Optional extra). This desktop calculator is ideal for the home, office and retail environments.12 digit large LCD display, 3 Euro conversion rates, 4 key memory, clock/time stamp, profit calculation (cost sell margin), tax calculation, auto power off