Oyster Perpetual 31 Dark Grey Roman

In Context

At 31 mm it is small by current standards, in the range most wristwatches occupied before cases began growing through the 1990s. The case back is closed, so the movement stays out of sight, and the sapphire crystal will resist everything short of deliberate abuse. 100 m is genuine swimming resistance — more than the shape of this watch suggests it would need.

The movement winds itself from the motion of your wrist. 48 hours of reserve is enough to set it down on Friday evening and find it still running on Monday. At 28,800 vph the seconds hand advances 8 times a second.

177200-0018 is one of 6 executions of the 177200 base reference. Underneath they are the same watch; what separates this one is a grey sunburst dial and a stainless steel case.

Calibre 2231 is a self-winding mechanical movement entirely developed and manufactured by Rolex. Like all Rolex Perpetual movements, the 2231 is a certified Swiss chronometer, a designation reserved for high-precision watches that have successfully passed the Swiss Official Chronometer Testing Institute (COSC) tests. Its architecture, in common with all Oyster watch movements, makes it singularly reliabl

11 other watches in the library run the Rolex 2231.

Rolex

Oyster Perpetual 26 Silver

176200-0015 · 26 mm

Rolex

Oyster Perpetual 26 Pink Explorer

176200-0004 · 26 mm

Rolex

Oyster Perpetual 26 White Explorer

176200-0011 · 26 mm

Rolex

Oyster Perpetual 31 Blue Azzurro Roman

177200-0015 · 31 mm