About this item Rich in Quantity: you will receive 24 pieces of pocket calculators in 4 colors, namely blue, dark green, red and yellow green, 6 pieces for each color; The abundant quantity and various colors can satisfy your studying needs in school, which can help students and kids start with basic math operations and progress to more complex operations Long Time Usage: each mini calculator is equipped with AG10 button y, so you can press the power button to start using it; You do not need to change the y for about one year; If the y power runs out, just unscrew the cover of the calculator and replace it Small Size: the kids calculator measures about 3.9 x 2.5 x 0.3 inch/ 10 x 6.3 x 0.8 cm, light in weight and portable, which won't take too much space, so you can put it in your backpack or bag when you go out for work or study, also can store it in desk drawer for handy usage orted Functions: handheld calculator features 8 digit display and has functional keys, including addition, subtraction, multiplication, division, percentage, square root, memory plus, memory minus, recall memory and clear memory, with stable and reliable performance, which can meet your daily needs for basic mathematical operations Wide to Apply: the standard calculator is a practical and necessary tool for school, home, office, travel and more, suitable for students, teachers, professionals, workers and housewives, which can be applied for calculation learning, calculation exercise, household expenditure calculation and math calculation