Standard Function Electronic Calculator with Large 12- Digit LCD Display, Handheld Desktop Calculator for Everyday and Basic Office Use Product Description: Great Appearance - 12-digit display and large numbers are easy to read. Large, sensitive keys for office, elementary school, market or home use Solar Powered Calculator - Solar powered (works in bright light only) and battery powered (1 AA battery included). If the solar bar is blocked, the numbers on the display will disappear. BASIC CALCULATOR - Add, Subtract, Multiply, Divide, Backspace, %, and MU.CALCULATOR LARGE DISPLAY - ABS material, measures 5.7 x 4.7 x 1.8 inches, weighs 4 ounces (1 piece). Doesn't take up much desktop space, but large enough to be comfortable to use.