Bezel, an annular outer ring for assembling a watch, can be used to fix the watch mirror. It is called "bezel" in English and "Bezel" in jargon, commonly known as "bezel". The bezel can be divided into real circle, false circle, moving circle and static circle. The inner side is called the inner ring (professionals call it the inner shadow circle, or it can be separated from the bezel), and the outer side is called the outer ring or the front ring.

Structurally independent is called a true circle, while structurally inseparable is called a false circle, if it is only a form. Compared with pseudo-circle, the advantages of real circle are obvious. First of all, it can use completely different materials. Gold ring with steel shell is a common strategy for gold watches. In addition to precious metals, alloys such as high-tech ceramics, titanium metal and forged carbon are also ideal materials for making bezel. Secondly, the independent bezel can be polished in various ways, such as case drawing bezel polishing. Because it is processed separately, it can be polished to the root without dead angle, showing a clear ridge line.

The bezel is functionally divided into a moving ring and a static ring. Most of the moving coils are matched with waterproof sports watches or diving watches. The bezel has scale, can rotate and has countdown function.