REFERENCE
228238
MODEL CASE
Oyster, 40 mm, yellow gold
oyster architecture
Monobloc middle case, screw-down case back and winding crown
Diameter
40 mm
Material
18 ct yellow gold
BEZEL
Fluted
Winding Crown
Screw-down, Twinlock double waterproofness system
WATER-RESISTANCE
Waterproof to 100 metres / 330 feet
Crystal
Scratch-resistant sapphire, Cyclops lens over the date
MOVEMENT
Perpetual, mechanical, self-winding
CALIBRE
3255, Manufacture Rolex
precision
-2/+2 sec/day, after casing
Oscillator
Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorbers
Escapement
Chronergy with optimized energy efficiency
Winding
Bidirectional self-winding via Perpetual rotor
POWER RESERVE
Approximately 70 hours
BRACELET
President, semi-circular three-piece links
bracelet material
18 ct yellow gold
clasp
Concealed folding Crownclasp
DIAL
White
Certification
Superlative Chronometer (COSC + Rolex certification after casing)

The 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, always in gold.

White 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.

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.

MODEL AVAILABILITY

All Rolex watches are assembled by hand with the utmost care to ensure exceptional quality. Such high standards naturally restrict Rolex production capacity and, at times, the demand for Rolex watches outpaces this capacity.

Therefore, the availability of certain models may be limited. New Rolex watches are exclusively sold by Official Rolex Retailers, who receive regular deliveries and independently manage the allocation and sales of watches to customers.

Chronolink is proud to be part of the worldwide network of Official Rolex Retailers and can provide information on the availability of Rolex watches.

HOW TO SET YOUR DAY-DATE 40

Synonymous with excellence and reliability, Rolex watches are designed for everyday wear, and depending on the model, perfectly suited for a wide range of sports and other activities. Built to last, these timepieces are characterized by their distinctive and timeless aesthetics. The Oyster Perpetual Day-Date 40 is the ultimate watch of prestige. Learn more about this model and how to set the time, date and day by watching the video.

The Oyster Perpetual Day-Date made its debut in 1956. Available only in 18 ct gold or platinum, it was the first calendar wristwatch to display the day – spelt out in full in a window on the dial – in addition to the date. With the President bracelet, created specially for it, the Day-Date embodies the essence of Rolex prestige and excellence.
ROLEX DAY-DATE

The ultimate watch of prestige

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