This portable mini-printing calculator is perfect for all your €œon the go€ accounting needs. This small but powerful calculator is capable of producing 1.6 lines per second and had a large, 12-digit display that is 33 percent larger than comparable models, The HR-8TM makes quick work of cost, selling price and margin calculations and offers easy to use exchange functions for up to three national currencies at the touch of a button, The tax keys allow for easy calculation of amount plus tax, amount less tax and tax amount.