12 digit calculator is perfect for desktop use either at home or in the office. Features an extra large LCD tilt display. This calculator is manufactured with 50% recycled plastic. Automatic replay acts as a paperless printer, allowing the user to enter, check, and correct up to 99 entries (ideal for adding large columns of figures without the use of a tape or AC power). Cost/sell/margin keys make for quick and easy calculations (simply enter two variables and the third automatically appears). Other functions include: full-size keyboard with tactile touch, automatic tax keys, selectable decimal and rounding slide switches, square root key, grand total key, percent key, 4 key independent memory, change sign key, backspace key, automatic power down, and hybrid power (solar/battery backup)..