The Rolex GMT-Master II, particularly the model M126710BLRO-0001 in Oystersteel with its striking black and red "Pepsi" bezel, is a highly sought-after timepiece renowned for its versatility and iconic design. This guide aims to provide a comprehensive overview of its functionality, addressing common user queries and supplementing the official Rolex user guides. While specific instructions may vary slightly depending on the exact model and year of manufacture, the core principles remain consistent across the GMT-Master II lineage. We will explore how to use the watch, address common questions about various models, and delve into the market for those considering purchasing one.
Understanding the GMT-Master II's Core Functionality:
The hallmark of the GMT-Master II is its ability to display two time zones simultaneously. This is achieved through the independently adjustable 24-hour hand, usually colored differently to distinguish it from the standard hour hand. This hand makes a full rotation in 24 hours, indicating a second time zone. The bezel, which is bidirectional, is crucial for setting this second time zone. Let's break down the key operations:
1. Setting the Time:
* Unscrew the Crown: Locate the crown (the winding knob) on the right side of the watch case. Unscrew it carefully counter-clockwise until it pops out. Avoid excessive force.
* Wind the Watch: With the crown unscrewed, gently turn it clockwise to wind the mainspring. You'll feel resistance as the mainspring fills. This is crucial for maintaining power reserve. The amount of winding needed depends on the power reserve remaining.
* Setting the Time: Pull the crown out to the first position (you should feel a distinct click). Now, turn the crown to set the hour, minute, and second hands to the correct time for your primary time zone.
* Setting the Second Time Zone: Pull the crown out to the second position (another distinct click). Now, turning the crown will independently adjust the 24-hour hand, allowing you to set your second time zone. Coordinate this with the bezel setting.
* Setting the Date: Depending on the model, you may also be able to adjust the date using the crown. Consult your specific watch's manual for details.
* Screw the Crown Back In: Once the time and date are set correctly, push the crown back in and screw it clockwise until it's securely tightened. This is essential for water resistance.
2. Using the Bezel:
The bidirectional rotating bezel is a key feature of the GMT-Master II. It's used in conjunction with the 24-hour hand to track a second time zone.
* Setting the Second Time Zone with the Bezel: Align the 24-hour hand with the time in your second time zone on the bezel. For example, if it's 10 PM in your second time zone, rotate the bezel until the 22 (10 PM) marker aligns with the 24-hour hand.
3. Quickset Date (If Applicable):
Some models of the GMT-Master II feature a quickset date function. Refer to your specific model's manual for instructions on how to adjust the date quickly without affecting the time.
4. Maintaining your Rolex GMT-Master II:
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