Dual Power Electronic Calculator With A 12 Digit Large Lcd Display From Offidix LARGE DISPLAY: 12 Digits, better vision, eye-angled, upright LCD display; Auto power off ANTISKID DESIGN: With anti-skid gasket, it's not easy to slide during operation DUAL POWER: One AAA battery( NOT included) and solar panel helps make sure that the calculator will function even in a dim place GREAT FOR HOME AND OFFICE: Performs common math as well as various financial functions, Perfect for both adults and students