1. Two-in-one function: screen stylus + common writing pen 2. Writing pen function: contains 1 black pen core, which can be rotated out to write 3. Pen holder: practical pen holder, stylish and beautiful, easy to carry when going out 4. Touch screen function: suitable for touch screen operation of iPhone series, Huawei, Samsung, Xiaomi and other mobile phones and tablets 5. Crystal decoration: exquisite appearance