1. Writing tablet design: The scientific calculator features a 6 inch writing board and a hidden pen, allowing you to take notes during calculations. Press the erase button to clear your notes, and the bottom of the calculator includes a lock switch to prevent accidental touches and securely store your handwritten content. 2. Lightweight and portable: This mini calculator combines an erasable writing pad with a foldable design, weighing approximately 200 grams. Its compact size makes it easy to carry in a bag, and it can be quickly retrieved for immediate use when needed. 3. Comfortable and quiet: The calculator is equipped with soft silicone buttons that provide a gentle touch and operate quietly. The noise writing experience enhances comfort, making it ideal for office work, accounting, student learning, and various other scenarios. 4. 240 calculation functions: This scientific calculator offers 240 functions, covering a wide range of operations such as statistical calculations, scientific functions, standard deviation, sum of squares, square roots, and scientific/technical notation.