Features12-Digits LC-DisplayPaper Size 58 mm (Outer Roll \"Roll 57 mm\")Printing Speed: 2,0 Lines/Sec.2 Color-Print (IR-40T)Power Source: Batteries (4 x AA)The HR-150RCE Casio 12 Digit Display Printing Calculator is a desktop, 2 colour printing calculator with a print speed of 2 lines per second. The calculator features a 12 digit LCD display, 3 rate euro conversion, profit calculation with cost, sell and margin, and tax calculation. Ideal for retail and book-keeping applications, the calculator is compatible with 58mm paper printing rolls