12-digit calculator provides extra heavy-duty durability that's perfect for power users and the everyday advanced user in busy office settings. Large, fluorescent display offers easy viewing to help prevent reading errors. Two-color, 4.5 line-per-second ribbon printer is fast and reliable for consistently legible results. Each key is engineered with Microban antimicrobial protection that reduces the growth of microbes and bacteria to prevent discoloration and odors. Professional keyboard layout with a left-side total key helps you quickly and accurately input data for fast calculations with minimal errors. AC-powered calculator also includes four independent memory, change sign key, average key, backspace key, double-zero key, tax calculations, calendar/clock function and more. Sharp EL-1197PIII 12 Digit Commercial Printing Calculator, Off White, 1 Each (Quantity)