Eco-friendly, stylish, and unique calculator tool. What should the perfect modern calculator be like? Should it be multifunctional, ergonomic, handy, and perhaps stylish? The Casio DF-120ECO calculator offers all these features. Its large 12-digit LCD display makes it very easy to read, allowing you to see the results even in direct sunlight. Additionally, these devices are absolutely reliable, as they can be powered by both light and batteries. In the dark, they automatically switch to battery power. In other words, you can use the calculator under all lighting conditions. The large keys enable quick and accurate input, reducing annoying typing and other errors. The Casio calculator comes with numerous functions: currency conversion, various tax calculations, selling price calculations, and more.