Rolex, GMT master II Ref 116710LN a stainless steel dual time Zone wristwatch with date and bracelet, circa 2010, dial: black, calibre: cal. 3186 automatic movement, 31 jewels, movement number: S74L1344, case: stainless steel, screw-down back, case number: 6441122, further stamped 2350 inner case back, Closure: stainless steel Rolex Oyster bracelet with integrated folding clasp, reference 78790A, dimensions: 40 mm diameter, bracelet circumference approximately 177 mm, signed: case, dial and movement, accessories: Rolex international guarantee card stating date of purchase 15 October 2013, user's manual, service booklet card holder, two swing tags, two additional links, travel pouch, cleaning cloth and presentation box with outer packaging, the Rolex GMT master was originally introduced in 1954. Two time zones could now be read at the same time, which proved invaluable for pilots. In 1988 Rolex then released the GMT-Master II, which increased the functionality by giving its wearer the option of adjusting the watch to read up to three different time zones at one glance. The present reference 116710LN is all steel released in 2007. The Ln at the end of the reference denoting Lunette noir (black bezel) together, with its wonderful splash of green in its green GMT hand and green signature enhances the watch's sporty look whilst not compromising on its luxurious feel and appearance.