calculator has a big and clear 12-digit display screen with a see-through cover, making it easy to read and use. The buttons are made of rubber and have been tested extensively for durability—500,000 times for pressing and 300,000 times for the printing on the buttons. This calculator can be powered by sunlight using its solar panels or by batteries, which are included. It can perform various functions like addition, subtraction, multiplication, division, mark-up calculation, grand total, and more. It's useful for school, college, office, or home, and it looks like a more expensive model but comes at a lower price.