Standard function electronic calculator with 12-digit large LCD display, handheld desk calculator for daily and basic office Beautiful appearance - 12-digit number display and large numbers, easy to read. Large and sensitive keys for easy calculations, ideal for office, elementary school, market or home use of the solar calculator - solar (works only in bright light) and battery power (includes 1 AA battery). If the solar light bar is blocked, the numbers in the display will disappear. Before use, put the battery in the calculator compartment basic calculator - addition, subtraction, multiplication, division, backspace, % and MU. Automatically turns off when not in use Approx. 10 Minutes Calculator Large Display - ABS material, dimensions 5.7 x 4.7 x 1.8 inches, weight 4 oz (1 piece). It doesn't take up much desktop space, but it's large enough to be comfortable to use