Description
The Oyster Perpetual Day‑Date 40 in 18 ct white gold with a meteorite, diamond-set dial, fluted bezel and a President bracelet.
Unworn Classic watch Rolex Day-Date 40, 18 ct white gold, Ref# 228239-0055 – luxury, elegance and practicality.
- Make: Rolex
- Model: Day-Date 40
- Reference: 228239-0055
- Diameter: 40 mm
- Case material: 18 ct white gold
- Dial color: Meteorite set with diamonds
- Bezel Type: Fluted
- Bezel Color: White
- Bezel Material: 18 ct white gold
- Crystal: Scratch-resistant sapphire, Cyclops lens over the date
- Movement: Perpetual, mechanical, self-winding
- Bracelet Type: President, semi-circular three-piece links
- Bracelet Material: 18 ct white gold
- Clasp: Concealed folding Crownclasp
- Functions: Centre hour, minute and seconds hands Instantaneous day and date in apertures, unrestricted rapid-setting. Stop-seconds for precise time setting
- Water resistance: Up to a 100m/330ft (10 ATM)
- Warranty: Balance of Rolex International Warranty
The watch is unworn and comes complete with full set of original accessories, such as watch box, warranty card dated recently, booklets and manuals.
Meteorite dial
An alloy from outer space
This dial features 10 baguette-cut diamonds. Formed in the far reaches of the solar system, metallic meteorite comes from an asteroid that exploded millions of years ago. On the voyage between planets, fragments of this natural extraterrestrial material, primarily composed of iron and nickel, cool by a few degrees Celsius every million years, creating unique, distinctive crystallization within the material that is impossible to recreate on Earth.
Metallic meteorite is rare and challenging to work with, but once it is cut into thin sections and a chemical treatment is applied, the great beauty of its interwoven internal structure is revealed. These fascinating and varied formations are known as Widmanstätten patterns. For its dials, Rolex works with leading experts in the field and selects only the sections of meteorite with a particularly well-formed surface rich in different shapes and reflections.
Fluted bezel
A Rolex signature
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 Day‑Date 40.
18 ct white gold
Commitment to excellence
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.
The President bracelet
The ultimate refinement
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 President bracelet, with its semi-circular three piece links, was created in 1956 for the launch of the Oyster Perpetual Day-Date. It represents the ultimate in refinement and comfort and is always made of carefully selected precious metals.
More Day‑Datetechnical details
Reference 228239
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Model case
Oyster, 40 mm, white gold
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Oyster architecture
Monobloc middle case, screw-down case back and winding crown
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Diameter
40 mm
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Material
18 ct white gold
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Bezel
Fluted
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Winding crown
Screw-down, Twinlock double waterproofness system
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Crystal
Scratch-resistant sapphire, Cyclops lens over the date
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Water resistance
Waterproof to 100 metres / 330 feet
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Movement
Perpetual, mechanical, self-winding
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Calibre
3255, Manufacture Rolex
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Precision
-2/+2 sec/day, after casing
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Functions
Centre hour, minute and seconds hands. Instantaneous day and date in apertures, unrestricted rapid-setting. Stop-seconds for precise time setting
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Oscillator
Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorbers
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Winding
Bidirectional self-winding via Perpetual rotor
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Power reserve
Approximately 70 hours
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Bracelet
President, semi-circular three-piece links
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Material
18 ct white gold
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Clasp
Concealed folding Crownclasp
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Dial
Meteorite set with diamonds
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Gem settings
10 baguette-cut diamonds
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Certification
Superlative Chronometer (COSC + Rolex certification after casing)
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