Canon 12-digit calculator, mp21dx, 2 color printing, sales tax key, 9-1/8″ x 12″ x 3″, white this two-color printing/display desktop calculator features an easy-to-read 12-digit fluorescent display. Quiet, two-color ink ribbon printer generates 3.5 lines per second with positive numbers in black and negative numbers in red. Decimal positions are add mode, 0, 2, 3, 4, 6 and floating. Functions include four-key memory, grand total, mark-up/down, tax calculation tip, sign change, item count, and delta percent calculation. Design includes a spacious keyboard with large keytops and heavy-duty metallic paper holder. Calculator uses a 2-1/4″ (57mm) wide plain paper roll. Calculator runs on ac power and weighs 4 lb. functions memory floating/decimal positions add mode 0, 2, 3, 4, 6 grand total mark-up/down tax calculation sign change item count delta percent calculation calculator features heavy duty paper holder this product arrives to most customers in 2-3 business days.