Large Screen & 12 Digits: A large LCD screen clearly displays large numbers, making it easy to read from a distance and aesthetically pleasing. Supports display of up to 12 digits. Dual Power Design: The calculator uses both solar and battery power (battery not included). As long as you use it in a well-lit environment, the solar panel will provide continuous power to the calculator. Sensitive and Large Buttons: When the buttons are pressed, they register quickly and display the corresponding number on the screen. The electronic desktop calculator has a scientific design with large buttons, which conforms to human habits and is comfortable to press. Multifunctional: Addition, subtraction, multiplication, division, backspace, grand total, CE, %, M+/M-/MRC, ON/AC button, and automatic shutdown. The desktop calculator turns off after about 6 minutes of inactivity. Ideal for Home and Office: This basic calculator is suitable for business, office, home, school, or anyone who needs to perform all types of calculations from time to time.