Rolex Lady-Datejust 31 “278240-0009”
The Rolex Lady-Datejust 31 “278240-0009” is a refined expression of timeless design, merging everyday practicality with Rolex’s hallmark luxury. With a 31mm Oystersteel case, an elegant dark grey dial with baton hour markers, and the comfort of an Oyster bracelet, this model represents a harmonious blend of sophistication and durability.
Dark Grey Dial
The defining feature of this Lady-Datejust is its dark grey dial, accented with sleek baton-style hour markers. Minimalist yet elegant, the baton indexes lend a contemporary flair while ensuring excellent readability. Protected by a scratch-resistant sapphire crystal, the dial is designed to remain flawless for decades.
Refined Domed Bezel
Encircling the dial is a polished domed bezel in Oystersteel. Unlike fluted or diamond-set variations, the domed bezel conveys understated elegance, reflecting light softly and enhancing the balanced proportions of the case. Its simplicity ensures versatile wear for both casual and formal settings.
Oyster Bracelet
Equipped with the iconic Oyster bracelet, this reference emphasizes both strength and comfort. Crafted from Oystersteel, the three-link bracelet features a secure folding Oysterclasp and the Easylink extension system, allowing for quick adjustments. Its blend of brushed and polished surfaces enhances both durability and refinement.
Rolex Caliber 2236
At the heart of the Lady-Datejust 278240-0009 is the Rolex Caliber 2236, an automatic self-winding movement known for precision and reliability. It incorporates the innovative Syloxi hairspring for resistance to magnetic fields and shocks, maintaining superior chronometer accuracy. With a 55-hour power reserve, it delivers dependable performance for everyday wear.
Practical Luxury
Like all Datejust models, this watch includes a date display at 3 o’clock, magnified by the Cyclops lens for effortless legibility. With 100 meters of water resistance and a robust Oystersteel case, the Lady-Datejust is as practical as it is elegant, designed to accompany its wearer on any occasion.
Key Features
- 31mm Oystersteel case
- Dark grey dial with baton hour markers
- Domed bezel for understated refinement
- Oyster bracelet with folding Oysterclasp and Easylink system
- Automatic Caliber 2236 with Syloxi hairspring
- Date window at 3 o’clock with Cyclops lens
- Scratch-resistant sapphire crystal
- Water-resistant to 100 meters / 330 feet
Conclusion
The Rolex Lady-Datejust 278240-0009 captures the essence of modern femininity and classic elegance. With its dark grey baton dial, domed bezel, and robust Oyster bracelet, this timepiece embodies versatility, luxury, and precision. Whether worn daily or reserved for special occasions, it reflects Rolex’s enduring legacy of watchmaking excellence.

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