What You Get: you will receive 30 packs of pocket size calculators in different colors; Sufficient quantity and colors can meet you and your classmates' different demands AA Battery Powered Calculator: these mini calculators for students are powered by an AA battery, which is an international universal battery model; Battery of the calculators for classroom can be replaced according to your actual needs, more serviceable; Avoid mixing new and used batteries to ensure optimal performance; Note: Batteries Not Included Stylish Calculator: the small calculator adopts candy colored design, and its flat panel design makes the body thin and flat, which is convenient for daily use and carrying; The size of the calculator is approx. 11.4 x 6.4 x 2 cm. / 4.49 x 2.52 x 0.79 inch, suitable for both office staffs and students, also a wise choice for business trip, journey and more Basic Calculator: the mini calculator for kids has automatic tax keys, percent key, square root key, backspace key and 4 key independent memories, including memory plus, memory minus, recall memory and clear memory, equipped with an LCD display, which can display up to 8 digits, ideal for office, school or home use Multiple usages: the four function calculator for school is small and lightweight, easy for you to store in the drawer or put it in the school bag or briefcase, suitable for home, school and office; It has high sensitivity and can quickly response to the keys, which can improve your working efficiency