Rolex, Men Watches, GMT-MASTER II, Steel/Gold.

The first Rolex GMT watch was designed in partnership with Pan American Airways and was given to all their crew on long distance flights. This watch had a 24-hour display fourth hand whose purpose was to allow the crew to set their watch to their current time zone and then rotate the bezel so an alternative time zone could also be displayed. They named it the GMT Master, the first of its kind.

To improve upon yet another innovative Rolex watch, the company launched the second generation Rolex GMT Master II in the early 1980s. This introduction was not intended to replace the original design, which Rolex continued to produce into the late 1990s.

Although the Rolex GMT Master II was visually similar to the original GMT Master, it had an additional movement that was capable of adjusting a quickset hour hand that could be set to local time while not disrupting any of the other times displayed. This meant that in conjunction with its rotatable bezel, it could now calculate a third time zone.

The Rolex GMT Master II was updated in 2005 with many new changes: technically, it featured the new Rolex Parachrom hairspring and a Triplock crown. Other changes included ornamental ones – the case increased in size, it displayed larger hands, and the bezel was now made of 904L steel, designed to protect it against corrosion and damage.