The S Pen is a stylus designed for use with select Samsung Galaxy devices, particularly the Galaxy Note series. It allows users to write, draw, and navigate their devices with precision. The S Pen features pressure sensitivity, enabling a more natural writing experience, similar to using a traditional pen. In addition to basic functions, the S Pen includes advanced features like Air Actions, which allow users to control their device remotely with gestures. It also supports screen-off memo, enabling quick note-taking without unlocking the device. Overall, the S Pen enhances productivity and creativity for users.