Package Included: You will receive a set of 24 black basic calculators for students. Each calculator measures approximately 11.4 x 6.4 x 2 cm. (4.49 x 2.52 x 0.79 inches), easy to carry. Suitable for office, school or home use Multifunctional Design: This calculators for kids features an 8-digit display and a host of useful features. Such as automatic tax calculations, percentage keys, backspace key, 3-key memory, square root key and auto-off function Dual Power Calculator: These pocket calculators feature a dual power system, utilizing both solar energy and battery backup (batteries not included). They operate in well-lit environments without the need for batteries. For early mornings or dimly lit spaces, simply insert an AA battery to ensure use whenever you need it Widely Used: These mini pocket calculators are great for a variety of environments, including home, school, and office. These calculators are highly sensitive and respond quickly to key presses, helping to improve your efficiency in any task Magic of Math: These calculators are great for independent math practice, helping students master addition, subtraction, multiplication, and division. These calculators are suitable for classroom use and help children develop essential math skills