The Casio MJ-120T-W Electronic Calculator is a versatile and reliable desktop calculator for school, office, or home use. With its large display and dual power source (battery and solar), you'll never have to worry about running out of power. Its 12 digits and 100 step check feature make calculations quick and accurate, while the key rollover and tax calculation options add convenience. The localized number display makes it easy to use in various regions. Perfect for all your mathematical needs.