Rolex Oyster Perpetual 31 mm

Rolex Oyster Perpetual 31, reference 277200-0016, has a 31 mm steel case with a domed bezel. A screw-down crown, part of the Twinlock double waterproofness system, secures the case. A sapphire crystal covers the black dial, which carries luminous hands and indices and a central seconds display. The self-winding calibre 2232 drives the watch, with Rolex certifying it as a chronometer and a power reserve of approximately 55 hours. This is a women's watch built on Rolex's Oyster case architecture. It comes on a steel Oyster bracelet fitted with a folding Oysterclasp and a comfort extension link. The screw-down crown and case construction hold the water resistance to 100 metres.