Rolex Oyster Perpetual 31mm with a white, diamond-set dial

The Oyster Perpetual 31 with a white, diamond-set dial and an Oyster bracelet.
The sunray finish creates delicate light reflections on many dials in the Oyster Perpetual collection. It is obtained using masterful brushing techniques that create grooves running outwards from the centre of the dial.

Light is diffused consistently along each engraving, creating a characteristic subtle glow that moves depending on the position of the wrist. Once the sunray finish has been completed, the dial colour is applied using Physical Vapour Deposition or electroplating. A light coat of varnish gives the dial its final look.

Rolex uses Oystersteel for its steel watch cases. Specially developed by the brand, Oystersteel belongs to the 904L steel family, alloys most commonly used in high-technology and in the aerospace and chemical industries, where maximum resistance to corrosion is essential.

Oystersteel is extremely resistant, offers an exceptional finish once polished and maintains its beauty even in the harshest environments.

The Oyster bracelet is a perfect alchemy of form and function, aesthetics and technology.

First introduced in the late 1930s, this particularly robust and comfortable metal bracelet with its broad, flat three-piece links remains the most universal bracelet in the Oyster collection. For the Oyster Perpetual models the Oyster bracelet is fitted with an Oysterclasp.

Model Case

Type

  • Oyster, 31 mm, Oystersteel

Diameter

  • 31 mm

Material

  • Oystersteel

Bezel

  • Fluted

Oyster Architecture

  • Monobloc middle case, screw-down case back and winding crown

Winding crown

  • Screw-down, Twinlock double waterproofness system

Crystal

  • Scratch-resistant sapphire, Cyclops lens over the date

Water Resistance

  • Waterproof to 100 metres/ 330 feet

Movement

Type

  • Perpetual, mechanical, self-winding

Calibre

  • 2231, Manufacture Rolex

Precision

  • -2/+2 sec/day, after casing

Oscillator

  • Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorbers

Winding

  • Bidirectional self-winding via Perpetual rotor

Power reserve

  • Approximately 55 hours

Functions

  • Centre hour, minute and seconds hands. Instantaneous date with rapid setting. Stop-seconds for precise time setting

Bracelet

Type

  • Oyster, three-piece solid links

Bracelet Material

  • Oystersteel

Clasp

  • Folding Oysterclasp with Easylink 5 mm comfort extension link

Dial

Type

  • White diamond set

Details

  • Highly legible Chromalight display with long-lasting blue luminescence

Case reference 177234