1. Low hardness of silver: Compared with other metals such as steel or ceramics, the hardness of silver is relatively low. When the bracelet is in contact with the mirror of the watch, applying enough force or friction will cause the silver bracelet to scratch the mirror.
2. Uneven surface: Some silver bracelets have protrusions, corners or rough parts. When these parts come into contact with the smooth glass surface of the watch, it is easy to cause scratches.
3, friction collision: in daily wear and activities, it is difficult for us to completely avoid the friction between hands and objects. Mirror usually refers to the glass or transparent covering on the dial of a watch to protect the dial and hands. It can be made of various materials, such as ordinary glass, mineral glass or sapphire glass. The main function of the watch mirror is to prevent dust, water droplets and other substances from entering the watch, and at the same time provide a clear vision for people to read time and other functions. Mirrors usually have certain hardness and scratch resistance to resist scratches and wear in daily use.