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.

Mother of Pearl Dial

Mother-of-pearl is by its nature full of mystery and surprises. Depending on its origin, it can be pink, white, black or yellow. It differs in colour, intensity and structure according to the part of the shell from which it is extracted. At Rolex, mother-of-pearl is never artificially coloured. Instead, particular know-how and skill are devoted to simply highlighting its natural beauty and preserving the original hues. As all mother-of-pearl dials are unique pieces, an identical dial will never be found on another wrist.

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 278383RBR
Model case
Model case
Oyster, 31 mm, Oystersteel, yellow gold and diamonds
Oyster architecture
Monobloc middle case, screw-down case back and winding crown
Diameter
31 mm
Material
Yellow Rolesor - combination of Oystersteel and 18 ct yellow 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
Yellow Rolesor - combination of Oystersteel and 18 ct yellow gold
Clasp
Folding Oysterclasp with Easylink 5 mm comfort extension link
Dial
Dial
Black mother-of-pearl set with diamonds
Gem-setting
Diamonds in 18 ct gold settings
Certification
Superlative Chronometer (COSC + Rolex certification after casing)