Name: Rolex datejust
Brand: Rolex
SKU: M278381RBR-0015

Datejust 31

New 2019 model

Discover the collection

Watch Features

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.

Silver 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 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.

2236 Movement

The calibre 2236 is a new-generation self-winding mechanical movement entirely developed and manufactured by Rolex. Fitted with a Syloxi hairspring in silicon, patented by Rolex, it offers a superlative level of chronometric performance. Insensitive to magnetic fields, the Syloxi hairspring provides great stability in the face of temperature variations and remains up to 10 times more precise than a traditional hairspring in case of shocks. Its patented geometry ensures its regularity in any position.

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 278381RBR

Model case: Model case
Oyster, 31 mm, Oystersteel, Everose gold and diamonds; Oyster architecture
Monobloc middle case, screw-down case back and winding crown; Diameter
31 mm; Material
Everose Rolesor - combination of Oystersteel and 18 ct Everose gold; Bezel
Set with diamonds; 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: Movement
Perpetual, mechanical, self-winding; Calibre
2236, 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; Oscillator
Syloxi hairspring in silicon with patented geometry. High-performance Paraflex shock absorbers; Winding
Bidirectional self-winding via Perpetual rotor; Power reserve
Approximately 55 hours

Bracelet: Bracelet
Oyster, flat three-piece links; Bracelet material
Everose Rolesor - combination of Oystersteel and 18 ct Everose gold; Clasp
Folding Oysterclasp with Easylink 5 mm comfort extension link