The calculator for office and desk use. Do you use your smartphone as a calculator, only to be interrupted by annoying notification pop-ups? In offices and business environments, investing in the Casio pocket/desk calculator is worthwhile. This easy-to-use little helper quickly reduces the likelihood of errors. The model features a large enough display to show ten digits. With its tiltable display, the entered numbers are always easy to read, which tends to lead to fewer mistakes. The model is powered by a clever combination of solar and battery energy, allowing it to be used reliably anywhere. It requires an LR54 battery, which is included. Precisely calculated: with the Casio pocket/desk calculator.