Civetta Office Desktop Calculator 12 Digits Large Plastic Buttons Dual Power Solar Electronic Calculator(Orange) Easy to read calculator with extra large LCD display, 12 digit display Auto power-off, ergonomic design comfortable button Perfect choice for office or home use, please buy product sold by Novias, otherwise we cannot guarantee the quality Dual powered: solar or 1 AA battery-powered Calculator help you whiz through tricky math problems, a great helper for your wonderful life