The OREVA OR-612-C is a versatile calculator designed to meet the needs of both students and professionals. It features a 12-digit display, allowing for precise calculations involving large numbers. The calculator is equipped with a “Check & Correct” function, enabling users to review and amend up to 120 steps of previous calculations, thereby reducing errors and enhancing accuracy. For convenience, the OR-612-C operates on both solar power and battery, ensuring uninterrupted usage across various lighting conditions. Its soft keypad ensures comfortable data entry, and the attached hard cover provides added protection and durability, making it suitable for daily use in diverse environments.