The application of sapphire bezel in watches is mainly reflected in the following aspects:

Protective function:
Sapphire bezel has high hardness and scratch resistance, which can effectively protect the surface of the watch from scratches and impacts, extending the service life of the watch.

High transparency:
The sapphire bezel has extremely high transparency, which can clearly display the internal craftsmanship and movement operation status of the watch, enhancing the overall beauty and visual effect of the watch.

Application example:
Several high-end watch brands, such as Richard Mille, Athens, Parmigiani, Hermes, etc., have already used colorless sapphires in their movements to enhance their performance and durability.

Cost and manufacturing process:
The manufacturing process of sapphire bezel is complex and costly, requiring processing at extremely high temperatures and specialized processing tools. These factors have led to the widespread use of sapphire bezel in high-end watches.