Adam Riese would be thrilled. Who doesn't know it? Whether for year-end closing, cost calculation, or even to calculate VAT in between: a pocket or desk calculator is essential in every office. These small calculating machines are so much more practical than a calculator window on a computer. The large, easy-to-use buttons allow experienced users to type almost blindly. This model can display up to ten digits on the screen. With the help of the tiltable display, you can easily read the entered numbers. The model is powered by a smart combination of solar and battery. This allows the calculator to be used reliably anywhere. The calculator requires 1 LR1130 battery.