12-digit professional desktop calculator with two-color printing is engineered with antimicrobial protection to reduce growth of microbes and bacteria that cause odors and discoloration. Print 4.5 lines per second in two colors. Design features a 12-digit fluorescent display and commercial keyboard. Functions include automatic tax keys, markup/gross profit margin, four-key independent memory, delta percent-percent of change, percent, change sign, grand total, item count, date/nonadd, and sigma. Calculator runs on AC power and is made with a high percentage of recycled material.