1.Operation Christmas Bulk Items: this cute mini pocket calculator has 8 digits, 10 numeric keys, 3 memory keys, and a range of function keys including addition, subtraction, multiplication, division, percentages, and square root, suitable for math teaching, science courses, and more, it's your tool for long-lasting success2.Compact Convenience: each package includes 20 compact black calculators, measuring approximately 3.9 x 2.3 x 0.4 inches; Lightweight and portable, it easily fits in your hand, backpack, or drawers for convenient storage, suitable for low to medium touch tasks3.Protective Cover and Keyring: our bulk calculators for student classroom come with a protective cover, preventing accidental key presses; The built in key ring allows for easy attachment to a keychain or backpack, adding convenience to your daily routine4.Built to Last: with scientifically designed buttons and a reliable reset function, this standard pocket size calculator ensures your comfort and a nice user experience; Its sturdy structure ensure longevity; Batteries are pre installed for immediate use5.Back to School Supplies For Students Classroom: this pocket sized calculator is good for elementary school students, ideal First day of school party favors for kids, a fun way to encourage kid's social skill development, can be applied as back to school gift exchange, school classroom prizes Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.