One of the most distinguish features of the Rolex GMT is the 24 hour bezel, which is used to measure different time zones. The bezel of the GMT II non-ceramic uses a Click-Spring to hold the bezel in its place. On the other hand, the bezel on the GMT II ceramic rotates on three ball bearings. The GMT II ceramic bezel clicks in one-hour jumps, rather than in minutes as the GMT II non-ceramic.
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| Rolex GMT II Ceramic Bezel |
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| Rolex GMT II Non-Ceramic in a Rubber B Watch Band |
