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B

Bezel

The bezel is the topmost ring of the watch, surrounding the dial of the watch. A bezel may be fixed or in the case of a diver's watch, rotating. It can either be plain (usually fixed) or can be marked with, for example a 0-60 minute scale in the case of divers' watches. Older rotating bezels were usually bi-directional, modern diving watches are equipped with a unidirectional bezel.

Bi-directional Rotating Bezel

A bezel that can be rotated either clockwise or counterclockwise. These are used for mathematical calculations such as average speed or distance or for keeping track of elapsed time.

Blued Screws

Traditionally, high quality movements were fitted with screws which were artificially blued, more for decoration than function.

Bracelet

A metal band attached to the case. It is called integral if there is no apparent discontinuity between case and bracelet and the profile of attachments is similar to the first link.

Buckle

Usually matching the case, it attaches the two parts of the leather strap around the wrist.