Rolex Oyster Perpetual Sky-Dweller Ref 326939. 18ct White Gold case, diameter 42mm which is water resistant to 100m / 330ft. Automatic chronometer Rolex 9001 calibre movement, 28,800, 40 jewels and a power reserve of 72 hours. Paramagnetic Blue Paracrom hairspring and high performance Paraflex shock absorbers. 12 apertures around the edge of the dial to indicate the month, centre disk indicates 24 hour display and date at 3 o’clock. Functions: Saros system Annual Calendar, GMT, Month, date, hours, minutes, seconds. Fluted bi-directional Ring Command bezel. 18ct white gold polished and matte finish Oyster lock bracelet. Box and papers dated May 2017.