Lady-Datejust – M279178-0017

Reference

Model case

Bezel

Water-resistance

Movement

Calibre

Power reserve

Bracelet

Dial

Certification

Superlative Chronometer (COSC + Rolex certification after casing)

Champagne-colour dial

This dial features diamonds in 18 ct gold settings. 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.

Fluted bezel

The Rolex fluted bezel is a mark of distinction. Originally, the fluting of the Oyster
bezel had a functional purpose: it served to screw the bezel onto the case helping
to ensure the waterproofness of the watch. It was therefore identical to the fluting
on the case back, which was also screwed onto the case for waterproofness, using
specific Rolex tools. Over time, the fluting became an aesthetic element, a genuine
Rolex signature feature. Today the fluted bezel is a mark of distinction, in gold on
this Lady-Datejust.

18 ct yellow gold

By operating its own exclusive foundry, Rolex has the unrivalled ability to cast the
highest quality 18 ct gold alloys. According to the proportion of silver, copper,
platinum or palladium added, different types of 18 ct gold are obtained: yellow,
pink or white. They are made with only the purest metals and meticulously inspected
in an in-house laboratory with state-of-the-art equipment, before the gold is formed
and shaped with the same painstaking attention to quality. Rolex's commitment to
excellence begins at the source.