Rotating bezel: A bezel that can be turned to perform different timekeeping and mathematical functions.
Rotational Axis: See Axis of Symmetry.
Round Brilliant Cut: See Brilliant cut.
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.
BLACK TITANIUM ...
Rotating bezels may be uni- or bi-directional. Unidirectional bezels are traditionally found in diving watches, and are constructed as such to prevent accidental "increasing" of the alloted dive time.
cutting-edge technical functions required by the top specialists in manned space missions such as analog time, digital time, day/date, mission elapsed time, mission alarm, Greenwich Mean Time, GMT alarm, chronograph, countdown timer, rotating bezel, ...
 See also: Bezel, Crystal, Jewelry, Diamond, Ring
  
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