178274-0004
The instantaneous date
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.
BLACK DIAL
The dial is the distinctive face of a Rolex watch, the feature most responsible for its identity and readability. Characterised by hour markers fashioned from 18 ct gold to prevent tarnishing, every Rolex dial is designed and manufactured in-house, largely by hand to ensure perfection.
THE JUBILEE BRACELET
The design, development and production of Rolex bracelets and clasps, as well as the stringent tests they face, involve advanced high technology. And, as with all the components of the watch, aesthetic controls by the human eye guarantee impeccable beauty. The Jubilee, a supple and comfortable five-piece link metal bracelet, was designed and made especially for the launch of the Oyster Perpetual Datejust in 1945.
2235 MOVEMENT
The Datejust 31 is equipped with calibre 2235, a self-winding mechanical movement entirely developed and manufactured by Rolex. Like all Rolex Perpetual movements, the 2235 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 reliable.
THE CYCLOPS LENS
The Cyclops lens enhances the date aperture, magnifying the date display for easy reading. It is one of the most distinctive Rolex features, and one of the most recognisable.
Specifications
Reference
178274
MODEL CASE
Oyster, 31 mm, Oystersteel and white gold
OYSTER ARCHITECTURE
Monobloc middle case, screw-down case back and winding crown
DIAMETER
31 mm
MATERIAL
White Rolesor - combination of Oystersteel and 18 ct white gold
BEZEL
Fluted
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
Perpetual, mechanical, self-winding
CALIBRE
2235, Manufacture Rolex
PRECISION
-2/+2 sec/day, after casing
FUNCTIONS
Centre hour, minute and seconds hands. Instantaneous date with rapid setting. Stop-seconds for precise time setting
WINDING
Bidirectional self-winding via Perpetual rotor
POWER RESERVE
Approximately 48 hours
BRACELET
Jubilee, five-piece links
BRACELET MATERIAL
Oystersteel
CLASP
Concealed folding Crownclasp
DIAL
Black
CERTIFICATION
Superlative Chronometer (COSC + Rolex certification after casing)
