Proper size: each elementary calculator measures approx. 11.4 x 6.4 x 2 cm/ 4.49 x 2.52 x 0.79 inch (with angled screen), portable and practical, can be put in pockets and bags, and use whenever need, lightweight with even weight distribution for comfortable calculations while using on the desktop or handheldDual powered calculator: these mini pocket size calculators are powered by solar and battery; It can work in a bright place without battery. If use it in the early morning or night, the screen maybe difficult to read in low light condition. Please insert AA battery ( not included) for continuous and accurate usageWide range of use: these pocket calculators are suitable for both office and school, proper for teachers, professors, home school educators, hobbyists or daily simple calculation, portable and practical; They also can be regarded as nice gifts for elementary school studentsPackage includes: receive rich content of handheld electronic pocket calculators in 6 different colors, such as purple, yellow, blue and more; Sufficient quantity and colors can meet your different demands, and you can share these practical pocket calculators to your friends and classmatesNice performance: the dual powered mini calculator is with constants for addition, subtraction, multiplication and division, come with 8 digit LCD display, can shut down automatically, bring nice using experience, wide keyboard with raised keys help press the buttons accurately