The OREVA OR-2012-C is a 12-digit calculator designed for various applications, including offices, homes, and educational settings. It features a large display and an aluminum faceplate, enhancing both visibility and durability. The calculator operates on dual power sources: solar energy and a pencil cell battery, ensuring continuous functionality under different lighting conditions. Additionally, it offers a “Check & Correct” function, allowing users to review and amend up to 120 steps of previous calculations, thereby minimizing errors. The soft keypad ensures a comfortable typing experience. These features make the OR-2012-C a reliable tool for daily computational tasks.