Large LCD screenThis black calculator can display 12 digits, the image is clear and does not hurt the eyes, which is convenient for long-distance reading Solar and battery The calculator is powered by solar or AA dry cell batteries (battery not included) When the ambient light is strong, solar energy will provide electricity Please install the AA batteries in low light conditions to ensure the calculator works properly Big Buttons The buttons of the calculator are made of high quality plastic, and the big buttons are convenient for typing, which makes your experience more satisfying [Good work partner] The calculator can perform common mathematical calculations and various financial calculation functions, accelerate the calculation processing speed, help you reduce calculation errors and improve the accuracy of calculations [Multifunction] The calculator is rich in functions, including addition, subtraction, multiplication and division, addition and subtraction , addition and subtraction, addition and subtraction, CE, M+/M-/MRC, ON/AC buttons, and it automatically turns off after about 5 minutes of inactivity