The MP121-MG is the first printing calculator that uses 100% recycled Canon Copier material to make the lower case of the calculator, as well as the plastic battery and print head covers. This helps save precious resources and, thanks to this calculatorâ€™s professional performance, you save time too.2-colour ink roller printing ensures positive figures stand out clearly in black while negative figures are shown in red. Print speed is a fast of 2.3 lines per second. The MP121-MG calculator connects to standard AC mains power. Made using recycled material, it meets the most rigorous quality requirements - to ensure reliable and long-lasting use.