Lightweight 12-digit portable desktop calculator features an extra-large LCD that tilt adjusts to your best viewing angle. Key tops are plastic. Features single live memory, three-digit punctuation for easy reading, percentage add-on/discount calculations, square root key and floating decimal point system. Also includes quick tax calculation, grand total key, add mode, several decimal positions (4, 2, 0, floating), up/off/down rounding, sign change, cost/sell/margin. With both solar and battery power, calculator operates even in low light. Automatically shuts off after 8 minutes of nonuse.