- Writing tablet design: The calculator has a 6 inch writing board with a hidden pen for taking notes during calculations. An erase button clears notes and a bottom lock switch secures the stylus notes to prevent accidental erasure. - Lightweight and portable: Mini calculator with an erasable writing pad and a foldable design, weighing about 200 grams. It is compact enough to carry in a bag and can be quickly removed and used when needed. - Comfortable and quiet: Silicone buttons are soft to the touch and operate quietly, providing a noise-free writing experience. Suitable for office work, accounting calculations, student computing learning, and other usage scenarios. - 240 calculation functions: This calculator offers 240 functions covering statistical calculations, scientific calculations, and more, including standard deviation, sum of squares, various functions, square root, and scientific/technical notation. - Use scenarios: Ideal for office tasks and meetings, on-the-go accounting calculations, and classroom study or self-guided learning.