Rolex Oyster Perpetual 31 mm

The Rolex Oyster Perpetual 31, reference 277200-0007, has a 31 mm Oystersteel case with a domed bezel. The turquoise blue dial sits beneath a scratch-resistant sapphire crystal and carries luminous hands and indices for legibility in low light. Inside is the calibre 2232, a Perpetual mechanical movement that winds itself and holds approximately 55 hours of power reserve. The watch is a certified chronometer, tested for accuracy after casing. A screw-down crown protects the movement from moisture and dust. The case is fitted to a steel Oyster bracelet with a folding Oysterclasp, which includes a comfort extension link. Rolex rates this Oyster Perpetual to a depth of 100 metres.