Cal.1066
Power reserve approx. 48 hours Waterproof function 50m Case size 38mm

The 1950s was an era when it became popular to move across continents due to the development of airplanes. The GMT Master was born at the request of Pan Am Airlines, which was a major airline at the time. The first GMT Master I is equipped with a red-blue bezel and a mirror dial, and features a 38mm case size and no crown guard that the current model has. Initially it was made of plexiglass, but it was changed to aluminum because it is vulnerable to impact, and it was produced from the start of sales in 1954 to around 1959.

Cal.1566 / Cal.1575
Power reserve approx. 36-48 hours Waterproof function 50m Case size 40mm

The case size has become 40 mm, and from around this time, two types of bracelets, Jubilee and Oyster Breath, have been lined up, and even with the current model, the crown guard, which is indispensable as a part that enhances design and practicality, is attached. Che Guevara, who is famous for wearing the GMT Master, also wore this model, and is famous as a very popular antique watch even in modern times. Since it is a long-selling model manufactured for about 20 years, the movement installed after 1965 is different from the initial release.

Cal.3075
Power reserve approx. 48 hours Waterproof function 100m Case size 40mm

There are no major design changes compared to the 2nd generation, but the movement is equipped with Cal.3075 with 28,800 vibrations to improve accuracy, and the quick change function of the calendar has improved operability. And the waterproof performance has evolved from 50m to 100m. From around this time, Rolex will show the reason why it is called the highest peak of practical wristwatches.

Cal.3085
Power reserve approx. 48 hours Waterproof function 100m Case size 40mm

The GMT Master II, which was born in 1983 and is a higher-end model of the GMT Master I. The first model, Ref.16760. The difference from GMT Master I is that only the short hand can be moved independently. And when used in combination with the bezel, you can grasp up to three time zones with one watch. And in order to differentiate from GMT Master I, the bezel color was only red x black. The GMT Master I was a plastic windshield, but it can be understood that this model is positioned as a higher model of the GMT Master I from the fact that it is equipped with a sapphire crystal windshield. The distribution volume in the second-hand market is extremely small. It is also called Fat Lady because the case is thicker than other GMT Masters.

Cal.3175
Power reserve approx. 48 hours Waterproof function 100m Case size 40mm

The final model Ref.16700 as GMT Master I has the windshield changed to sapphire crystal like II. Until then, the bracelet was a single lock, but since 1995 it has become a double lock that is still in use today, further improving its practicality. In terms of functionality, the GMT Master II will be the winner, but the movement Cal.3175 installed in this model is still known as a masterpiece movement that Rolex is proud of because of its high maintainability.

Cal.3185
Power reserve approx. 48 hours Waterproof function 100m Case size 40mm

It was changed from Cal.3085 to Cal.3185, which was installed in the first GMT Master II, and when minor changes were made, it boasted the best-in-class movement of this generation in terms of more stable functionality and practicality. .. Looking at the long-selling product for about 20 years, it is the foundation of the current GMT master, such as the birth of the same model with different materials such as solid gold and combination materials from around this time.

Cal.3186
Power reserve approx. 48 hours Waterproof function 100m Case size 40mm

The 3rd generation moved to Cal.3186, and by adopting a parachrom hairspring, the weaknesses affected by magnetic field, temperature change, impact, etc. were overcome. It is said that Rolex spent five years developing this caliber. And from this model, a new ceramic material is adopted, and it will be Rolex's first ceramic-equipped model. In the bracelet, the problem of stretch of the breath, which was often seen in Rolex until then, was alleviated by technological progress from this time, and the central piece was mirror-finished. In the same model since 2013, the luminous paint was changed from luminova to chromalite, and it glowed blue in the dark.

Cal.3285
Power reserve approx. 70 hours Waterproof function 100m Case size 40mm

The red-blue color of the ceramic bezel is now available on the stainless steel model. This 4th generation model uses a vintage jubilee breath and is equipped with a newly developed movement. The new Cal.3285 adds Rolex's patented "Cronergy Escapement" technology, which increases efficiency and is less susceptible to magnetism, extending the power reserve to 70 hours.

Cal.3285
Power reserve approx. 70 hours Waterproof function 100m Case size 40mm

One year has passed since the appearance of the new model Ref.126710BLRO, and the blue-black bezel that appeared from the previous model has been announced continuously. With Cal.3285, the GMT Master not only looks practical and stable, but also has attractive cost performance, and its technological and innovative creativity will continue to develop even if we look to the long future. Will.