This 3-in-1 desk calculator with notepad combines a 12-digit calculator and a built-in erasable Lcd writing pad, letting you calculate and jot down notes simultaneously without needing to carry extra notepads or pens. A smooth, responsive stylus stored on the back allows for quick access. It has dual foldable support stands on the back, creating a comfortable ergonomic angle for both calculating and writing to help reduce neck and wrist strain during long hours of use for school, office, home tasks. This solar-powered calculator also includes a CR2032 button battery backup, ensuring stable performance in both bright and low-light environments so you will not face sudden power loss during important calculations. It features a one-touch button that instantly clears the writing pad when needed, plus a slide-to-lock function that protects your notes from accidental erasures, making it perfect for multi-step calculations and meetings.