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The GMT-Master II, created originally for professional use, has become with its unparalleled functionality and its finesse style the globe-trotters watch using its double time zone.
It has the 3186 caliber, a self-winding mechanical movement that replaces the 3185. It has a Parachrom spiral, offering greater resistance to shocks and temperature variations.
It is certified COSC : The official offices of the COSC (Swiss Official Control of Chronometers) were founded in 1973 in La Chaux-de-Fonds. It is an independent organization that guarantees the Swiss manufacturing tradition of precision.
The dial has an additional dial-around hand in 24 hours, complementing the traditional hour, minute and second hands, as well as a 24-hour bidirectional rotating bezel. This additional 24-hour hand with the distinctive color indicates the time of reference in a first time zone (that of the place of residence for example), which is read on the graduation of the bezel. Local time can be easily adjusted by hour hand jumps thanks to an astute mechanism controlled by the winding crown. The hour hand can be moved forward or backward independently of the minutes and seconds. This allows travelers to set their watch on a new time zone without affecting the time of reference.
The watch is waterproof up to 330 feets.
The steel 116710LN reference is presented in Bale in 2006 and it is later that the yellow gold 116758SARN appears with a bi-directional rotating bezel set with baguette cut sapphires), and baguette cut diamonds, case set with brilliant cut diamonds.
The case is like new, thick and sharp. The bevels are pointed and it has perfectly defined chamfers. There is an attractive satin finish, which is characteristic of ROLEX. We can easily see the 3 punches on the 18K gold case.
The 18k yellow golde Oysterlock bracelet, reference 78208 with Easylink extension is also like new.
The model has been sold in july 2014. A full service has been done by Rolex and the watch has now a 2 years worldwide warranty until september 2021.