Measuring 6 x 5 inches, the pocket calculator is small and lightweight, making it easy to store in a drawer or carry in a book bag or briefcase;Featuring a large display screen and dual power sources for ultimate convenience. The simple calculator is powered by both solar energy and batteries, and can be used in areas with ample light without batteries. 12 Digit Display Screen -12 digit numerical calculation, sufficient for daily use, and the large display screen makes it easier for you to read. Small and portable general purpose desktop calculator for home, school, office or shop. Has a variety of financial functions, great for adults and students. Quantity over 1000 ship by sea.