This 12-digit solar energy calculator features a durable plastic housing, making it both lightweight and sturdy. It is equipped with a powerful solar panel that efficiently harnesses solar energy to power the calculator, reducing the need for batteries and promoting sustainability. The calculator comes with a built-in 1 cell battery, ensuring continuous functionality even in low-light conditions. Its sleek design and compact size make it convenient to carry and use on the go. With its 12-digit display, this calculator offers the convenience of performing complex calculations with ease. Additionally, this calculator can be personalized with your choice of custom engraving, making it a perfect gift or promotional item. Whether used in the office, school, or at home, this solar energy calculator provides reliable performance and makes environmental consciousness simple and practical.