Universal. Magnetic touch. Two free tips. Widely compatible: Pencil max is universal stylus pen, which widely compatible with tablet, smart phone, etc. Easy to use: Turn on this active digital pen by simply touching the cap button, do not need to install bluetooth or apps. It also support Type C fast charge, charge 2 hours can be continuously use 8 hours. Intelligent sleep and auto power off after 5 minutes of no use ensure energy save, safety and keep long life.