The Rolex GMT-Master, and its successor the GMT-Master II, are iconic watches renowned for their ability to display two time zones simultaneously. This functionality is achieved through a fourth hand, independently adjustable from the standard hour, minute, and second hands. Mastering the art of setting this fourth hand is crucial to fully utilizing the watch's capabilities. This comprehensive guide will walk you through the process, covering various aspects of time setting on the GMT-Master and GMT-Master II, addressing common questions and potential pitfalls.
Understanding the GMT Hand and its Function
Before diving into the setting procedure, it's important to understand the role of the GMT hand. Unlike the standard hour hand, which tracks the local time, the GMT hand typically points to the 24-hour time in a second time zone. This 24-hour display uses a graduated bezel, usually with alternating black and red sections representing day and night respectively. This clever design eliminates the ambiguity of AM/PM notation.
The GMT-Master II introduces a key improvement over its predecessor: independent adjustment of the hour hand. While the original GMT-Master required adjusting the hour hand along with the GMT hand to change the local time, the GMT-Master II allows for independent adjustment, making time zone changes far more intuitive and convenient.
Rolex GMT-Master Settings: A Step-by-Step Guide
The crown of a Rolex GMT-Master is the key to unlocking all its timekeeping functionalities. It operates in three positions:
* Position 1 (Screwed Down): This is the normal, water-resistant position. The crown is fully screwed into the case.
* Position 2 (First Pull): Pulling the crown out to the first position allows you to adjust the date. This position is not relevant for setting the time zones.
* Position 3 (Second Pull): Pulling the crown out to the second position allows you to set the time. This is where the magic happens for adjusting the GMT hand and the local time.
Setting the GMT Hand: The Easiest Method (Starting in Position 3)
We find it easiest to set the GMT hand by starting in Position 3. Here's a step-by-step guide:
1. Unscrew and Pull the Crown: Gently unscrew the crown (if it's a screw-down crown) and pull it out to Position 3. You'll notice the second hand stops moving. This is crucial to ensure accurate time setting.
2. Setting the GMT Hand: With the crown in Position 3, rotating the crown will move the GMT hand. Remember, this hand represents the 24-hour time in your second time zone. Turn the crown clockwise to advance the GMT hand, and counter-clockwise to retard it. Line it up with the desired time on the 24-hour bezel.
3. Setting the Local Time: Once the GMT hand is set, you can adjust the local time. Remember, on the GMT-Master II, this is done independently. Continue rotating the crown to adjust the hour, minute, and second hands (the second hand will start moving again once you release the crown slightly). On the original GMT-Master, adjusting the hour hand will also move the GMT hand.
4. Screw the Crown Back: Once you've set both the GMT hand and local time, gently screw the crown back into Position 1 to secure the watch and maintain its water resistance.
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