Dual Power Convenience Operates with both solar energy and battery backup to ensure reliable performance even in low light conditions. (AA batteries not included) Large, EasytoRead Display Features a 12digit screen with oversized numbers, making calculations clear and reducing eye strain during extended use. Comfortable Big Buttons Designed with large, wellspaced keys that fit natural finger movement, offering a comfortable touch and minimizing input errors. Essential Functions Supports basic operations including addition, subtraction, multiplication, division, backspace, percentage, and MU (markup) calculations. Automatically powers off after approximately 10 minutes of inactivity to conserve energy. Practical Applications Ideal for office desks where dependable performance is essential for daily financial or administrative tasks. for home use, such as managing household budgets, expense tracking, or bill calculations. A tool for students and professionals who require accurate and efficient calculations during study, exams, or client meetings. Compact and Efficient Designed to fit comfortably on any desk without occupying excessive space, while providing reliable performance and longlasting durability.