[EASY-TO-USE DESIGN] - With its large screen, this calculator is made for convenient and comfortable everyday use. Its tilted and ang display allows you to easily see your calculations without straining your eyes. [LARGE RESPONSIVE BUTTONS] - Its spacious button size ensures that your fingers are much less likely to hit the wrong number, all while typing with a satisfying feeling. [ROBUST BUILD] - Built with a sturdy and premium body, the Office Calculator is constructed with everyday use in mind. It is convenient, powerful, and long lasting. [VERSATILE FUNCTIONS] - With its add, subtract, multiply, divide, percent, grand total and CE Button functionalities, this calculator's versatile nature allows it to be used in many occasions. [DUAL POWER SOURCES] - With the aid of its dual solar and y power system, it is fully powered in any lit environment. The y comes included with the calculator, ensuring quick and easy access right away. PLEASE NOTE: The calculator will turn itself off after about 6 minutes of being idle.