Deli scientific calculator 12 digit, 252 function (vivid) (d82es).easy to use.2 screen display, support of 252 kinds of special function. With modern design, easy to carry and practical to use. Solar powered, or powered by 1 x cr3025 button battery (included). Memory function, a good student helper. Equipped with black translucent case, it can resistant dust. Energy saving and environment friendly. Easy to use for long time. Use your office & school work. 1 piece calculators in box. Color: dark black multi colors.