Rolex Oyster Sky-Dweller 42 Watch 326139 bk

42mm 18K white gold case, bidirectional rotatable ring command bezel, black dial, automatic Rolex caliber 9001 movement, second time-zone displayed via off-center rotating disc, Saros annual calendar with date at 3 o'clock and month indicated in discrete apertures at each of the 12 hour marks, black alligator leather strap with 18K white gold folding Oysterclasp. Water resistant to 100 meters.