For sale at Debonar Watches: pre-owned Rolex GMT Master II 116713LN, full set.The case and Oyster bracelet feature a striking two-tone finish that utilizes 904L stainless steel and 18 karat yellow gold.The GMT Master II was a significant addition to the GMT Master line. One of its most impressive functions was the independent 24-hour hand that is offered in a cool green hue on the ref. 116713. Since the 24-hour hand can be adjusted without disturbing the other hands on the dial; the GMT Master II is capable of tracking up to three time zones at once, a truly incredible feat.Like all Rolexes, the movement is in-house and for this version, contains the Rolex Parachrom hairspring which is supposed to be better at resisting the negative effects of magnetic fields and thus keeping an accurate beat over the years. Rolex created the first Oyster Perpetual GMT watch in the 1950s for Pan Am pilots who wanted a quick way to check and know the time in different timezones. The classic design has gone through various refinements, but it remains pretty much the same today. The original Rolex GMT was one of the first watches on the market that could tell time in two timezones at once. One of the newest upgrades to the iconic GMT Master pilot’s watch came in 2006 with the 6-digit GMT Master II ref. 116713. In this version, reference 116713 LN, one of the main new innovations is the use of a ceramic material for the bezel dubbed Cerachrom. BRAND ROLEX MODEL GMT MASTER II REFERENCE 116713LN CASE MATERIAL STEEL/GOLD MOVEMENT AUTOMATIC DIMENSION 40 MM DIAL BLACK BEZEL CERAMIC CRYSTAL SAPPHIRE BRACELET TYPE OYSTER BRACELET MATERIAL STEEL/GOLD BRACELET LENGHT 18.5 CM ORIGINAL BOX YES ORIGINAL PAPERS YES YEAR APPROX. THE '10s CONDITION VERY GOOD