Glossary

Bi-Directional Rotating Bezel

The rotating bezel is a frame surrounding the watch crystal that can rotate both clockwise and counterclockwise. It serves various functions, such as measuring elapsed time or setting a specific time. The bezel often features time markings or divisions to aid in time reading or timing tasks.


The bidirectional rotation of the bezel offers maximum flexibility for starting and adjusting timing. It is commonly used in diving watches to track air supply for divers. This feature is a practical addition to the watch design, enhancing its functionality.

Rolex GMT ‑ Master II