The helpful calculator for office and desk. Paperwork can be annoying, but constant calculations at your desk are even more so? Do you need to consider many different factors in your calculations? The pocket/desktop calculator is here to help. Whether for large or small calculations, its manageable functions and easy-to-use buttons make it a true assistant. This model can display up to twelve digits on the screen. It is powered by a clever combination of solar and battery energy, allowing the calculator to be used reliably anywhere. The calculator requires an LR44 type battery, which is conveniently included, so you can start calculating right after unpacking. A calculator like the Canon pocket/desktop calculator should not be missing from any desk.