Product Features Dual Power Supply: Features both solar and battery power options. Under normal lighting conditions, it primarily uses solar power for energy efficiency and environmental friendliness. When light levels are low, it automatically switches to battery power to ensure the calculator remains fully functional at all times, eliminating concerns about power outages affecting work or study. Large Screen Display: Features a 12-digit LCD large glass display screen, with clear and easy-to-read numbers and symbols. Even in dimly lit environments, results can be easily viewed, reducing eye strain. Ergonomic Keyboard Design: The keyboard is designed with ergonomic principles in mind, offering a comfortable feel and responsive performance. Keys provide a clear tactile feedback when pressed, with quick rebound, ensuring smooth input of numbers and operators, and effectively reducing the risk of errors. Durable Material: Made from ABS material, it offers excellent impact resistance and wear resistance, ensuring durability and longevity. It can withstand minor bumps and friction during daily use, making it suitable for long-term use in various settings such as offices and schools. Comprehensive Basic Functions:It supports basic arithmetic operations(addition, subtraction, multiplication, and division)as well as common functions like percentage calculations and square roots, meeting various basic calculation needs in daily office work and study. It serves as a reliable assistant for office workers and students.