【Large LCD Display】This calculator displays 12 digits; the screen is clear and easy on the eyes, convenient for reading from a distance. 【Solar and Battery Powered】Powered by solar energy or AA batteries (batteries not included). Solar power is used when ambient light is sufficient; install AA batteries in low-light conditions to ensure operation. 【Large Buttons】High-quality plastic keys; large buttons for easy input, making your experience more satisfying. 【A Great Work Partner】Performs basic mathematical calculations, helping reduce errors and improve accuracy. 【Multi-function】Features addition, subtraction, multiplication, division, total, CE, M+/M-/MRC, and on/ac buttons. Auto-shutoff after approximately 5 minutes of inactivity. Measurements are manual; please allow 1-3cm error. Due to lighting and display differences, there may be color variations; please refer to the actual item received.