If you need some accounting at-a-glance, Pen+Gear offers a charming mini calculator with an eight-digit interface. This handheld calculator has every function you need to perform simple math quickly. It includes functions like percentages, multiplication, square roots, subtraction and more. The compact design keeps your surface uncluttered and organized and makes it easier to take it almost anywhere; With the calculator using classic solar diode power, you will never have to worry about replacing the batteries and save on battery costs. Easy-to-press buttons eliminate accidental button pushes and keep your calculations on point.