High-quality Material Made of high-quality plastic, sturdy, the mini calculator with built-in button battery is durable and has a long service life. Pocket Size The ideal pocket size (6.8*12cm/2.67in*4.72in) is suitable for one-handed use and it is lightweight (48.1g/0.10lb), making it easy to carry, carry and ranger. Dual Power SupplyThis 8-digit display calculator with silicone buttons uses solar energy and batteries (batteries included). The solar panel will fully charge the calculator as long as you use it in a well-lit area. Multifunction: This simple calculator has all the necessary operations, including addition, subtraction, multiplication, division, percentage, square root, memory recall, memory clear and more, making it useful for schools, offices and businesses. Note: Data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be color differences, please refer to the actual item received.