
Day-Date 40Oyster, 40 mm, white gold and diamonds
The Oyster Perpetual Day-Date 40 in 18 ct white gold, with a meteorite, diamond-set dial, diamond-set bezel and a President bracelet.
Its dial features 10 baguette-cut diamonds. The Day-Date was the first watch to indicate the day of the week spelt out in full when it was first presented in 1956.


Meteorite dial
From across the Solar System
Meteorite comes from the heart of an asteroid or possibly even a planet that has exploded, propelling material across the Solar System until chance brings it into our planet’s orbit and gravity pulls it to Earth.
During its journey, the centre of the meteorite is gradually transformed, producing highly unusual metallic patterns, resulting from the very slow cooling of molten asteroid cores. The designers at Rolex create from these configurations a unique treasure for some of the most prestigious models, including this Day-Date 40.
Model features
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Diamond-Set Bezel A sparkling symphony -
18 ct white gold Commitment to excellence -
The President bracelet The ultimate refinement -
Day Display Instantaneous at midnight -
The Cyclops lens A magnifying lens -
3255 Movement Superlative performance
More Day-Date
Technical Details
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Reference 228349RBR
Model Case
- Model Case
- Oyster, 40 mm, white gold and diamonds
- Oyster Architecture
- Monobloc middle case, screw-down case back and winding crown
- Diameter
- 40 mm
- Material
- 18 ct white 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
- 3255, Manufacture Rolex
- Precision
- -2/+2 sec/day, after casing
- Functions
- Centre hour, minute and seconds hands. Instantaneous day and date in apertures, unrestricted rapid-setting. Stop-seconds for precise time setting
- Oscillator
- Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorbers
- Winding
- Bidirectional self-winding via Perpetual rotor
- Power reserve
- Approximately 70 hours
Bracelet
- Bracelet
- President, semi-circular three-piece links
- Bracelet Material
- 18 ct white gold
- Clasp
- Concealed folding Crownclasp
Dial
- Dial
- Meteorite set with diamonds
- Gem setting
- 10 baguette-cut diamonds
Certification
- Certification
- Superlative Chronometer (COSC + Rolex certification after casing)
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.