This is a calculator, made of high-class materials, and can be used for a long time. It is small in size and light in weight, and it is also very convenient to carry around. Can help you solve more difficult calculation problems, suitable for schools, offices, shops and other places. Features -Material: Plastic -Power supply mode: solar energy or battery. -Note: With built-in battery. -It has solar power design, but very practical in use. Suitable for school and office. -It is easy to use and operate, bring much convenience to you. You can use it easily. -Good materials and , you can buy this practical mini calculator at a very . - workmanship and good materials ensure a and perfect details. -It can be a very practical present for your children, they will definitely need it. Package list: 1 x Calculator