These two kinds of pens belong to multi-functional touch stylus, but they are all silicone soft tips, which are generally very cheap, a few dollars each, but when writing, they don't feel very good, and the silicone tip always falls off. There is a transparent disc at the front end of the disc pen to avoid blocking the line of sight. The connection between the disk and the pen is soft, so the disk is attached to the screen even if the pen is tilted when writing. Although the disk is transparent, you can see the screen under the disk, but there are still some visual differences. Moreover, the joint of the disc is easy to break, and a few strokes are usually attached to the essay. When it first appeared a few years ago, it was more expensive, about 100 yuan. Now it only costs more than 20 yuan.