12-digit business calculator is perfect for the home or office. Features an extra large, easyt-to-read angled LCD display. This calculator is engineered with an antimicrobial agent to reduce the growth of microbes & bacteria on the product that can cause discoloration & odors. Manufactured with recycled plastic. Cost / sell / margin keys for quick & easy profit calculations (enter two variables & the third automatically appears). Other functions include: item count, selectable decimal & rounding slide switches, backspace key, percent key, square root key, change sign key, 3-key independent memory, & automatic constants. Operates on hybrid power (solar with battery backup). Power Source(s): Battery; Solar; Display Notation: Numeric; Number of Display Digits: 12; Memory: 3-Key.