Easy Check Two-Line Calculator is perfect for desktop use at home or in the office. Extra-large, 12-digit tilt LCD makes calculations easier by seeing the problem and solution at the same time. The easy-to-read display also records and shows up to 100 key strokes. Left and right arrow keys allow you to check entries. Insert and delete keys enable modification and correction of calculations. Parentheses keys enable complex calculations. Selectable rounding switch allows you to choose between rounding up, down or automatic round off. Selectable decimal switch lets you choose how many decimal places are displayed. Automatic tax keys calculate the tax amount to be added or subtracted to the original price. Percent compute percentage when calculating multiplication and division. Other functions include three-key independent memory, backspace key, cost/sell/margin keys and automatic power down. Calculator operates on solar power with battery backup (L1131). All keys are made of plastic.