The Rolex GMT-Master story began in 1954 when Rolex introduced the referral 6542. The watch was housed in the timeless steel Oyster, which was 38mm in size. This was among the initial sports enjoyed from Rolex as well as construction-wise, it established the standard for the foreseeable future. Similar to the present-day watches, the 6542 instance was basically of three-piece style.

The watch had two developments that allowed news at the time, yet aspects we consider given in the modern-day period. The first and less evident was the date magnifying bubble, or to use Rolex terminology the cyclops. This was a new feature presented the year before, i.e., 1953 on the Datejust line. The second was, naturally, the double-time area issue.

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The double-time area was a helpful tool for pilots and those who were traveling a great deal across different continents. The ability to track local and house time was particularly useful for commercial pilots. The American airline firm, Pan American Airlines, or Pan Am for brief, came close to Rolex as well as inquired to create a look for their pilots. This partnership resulted in the development of the GMT-Master as well as in particular the initial referral 6542. The commercially released watches housed a base quality 1030 which was customized to consist of the 1-day hand and was provided the caliber number 1065. This chronometer-rated activity was a four-hand quality with day feature. The 1-day hand-finished one full turning every 24-hour and the bi-directional bezel might be revolved to enable the user to check the home time once they had changed their watch to local time or the other way around.

The renowned red, as well as blue bezel, made its launching on the 6542. Known to enthusiasts as the Pepsi bezel, because its palette is reminiscent of the well-known soda pop brand, the blue half presents evening hours, 18:00-06:00, as well as the red half, day hours, 06:00-18:00.