Datejust 31 – M278241-0009

Reference

Model case

Bezel

Water-resistance

Movement

Calibre

Power reserve

Bracelet

Dial

Certification

Superlative Chronometer (COSC + Rolex certification after casing)

Rosé-colour dial

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.

Everose Rolesor

Gold is coveted for its lustre and nobility. Steel reinforces strength and reliability.
Together, they harmoniously combine the best of their properties. A true Rolex
signature, Rolesor has featured on Rolex models since the early 1930s, and was
trademarked as a name in 1933. It is one of the prominent pillars of the Oyster collection.

The Oyster bracelet

The Oyster bracelet is a perfect alchemy of form and function, aesthetics and
technology, designed to be both robust and comfortable. It is equipped with
an Oysterclasp and the Easylink comfort extension link, also exclusive to Rolex.
This ingenious system allows the wearer to increase the bracelet length by
approximately 5 mm, providing additional comfort in any circumstance.