Rolex Datejust 31 – Ref. 278344RBR-0021
The Rolex Datejust 31 Ref. 278344RBR-0021 is a distinguished women’s timepiece combining elegant design, premium materials, and Rolex’s hallmark reliability. Launched in 2020, this model marries Oystersteel and 18k white gold with diamonds, while its pink sunray dial and Roman numerals lend it timeless femininity. It is a perfect balance of luxury, precision, and everyday wearability.
Case Materials
The 31 mm case is crafted in Rolex’s White Rolesor — a blend of Oystersteel (904L stainless steel) and 18k white gold — which ensures strength and elegance. A domed bezel is set with brilliant-cut diamonds, adding sparkle without compromising the refined silhouette. The case is waterproof to 100 m (330 ft), featuring a screw-down Twinlock crown and robust Oyster architecture.
Dial Aesthetic Signature
Underneath the scratch-resistant sapphire crystal (with Cyclops lens over date), lies a striking pink sunray finish dial with Roman numeral hour markers. The sunray brushing invites dynamic plays of light across the surface, accentuating its depth and movement as your wrist shifts. The Roman numerals deliver classical balance, while the pink tone adds feminine warmth to the composition.
Movement Performance
278344rbr-0021 is powered by Rolex’s in-house Calibre 2236, a self-winding mechanical movement with the Paraflex shock absorbers and a Syloxi silicon hairspring for enhanced stability and precision. It offers the functions of hours, minutes, seconds, and instantaneous date. The movement achieves approximately 55 hours of power reserve and is certified a Superlative Chronometer (−2/+2 sec/day) after casing.
Bracelet Comfort Features
The watch is fitted with a robust Oyster bracelet composed of three-piece solid links, combining durability and elegance. It features the Easylink 5 mm comfort extension link, allowing the wearer to extend the bracelet on the go for enhanced comfort. A folding Oysterclasp secures the watch confidently on the wrist.
Technical Specifications
- Reference: 278344RBR-0021
- Case: 31 mm White Rolesor (steel + white gold)
- Bezel: Diamond-set domed bezel
- Dial: Pink sunray finish with Roman numerals
- Movement: Rolex Calibre 2236 automatic
- Power Reserve: ~55 hours
- Water Resistance: 100 m / 330 ft
- Bracelet: Oyster with Easylink 5 mm extension
- Certification: Rolex Superlative Chronometer
Unique Characteristics Appeal
- Diamond bezel elegance: The added diamonds on the bezel elevate this model from classic dress usage to refined jewellery expression.
- Rolesor construction: Combining steel and white gold adds both resilience and prestige, a signature Rolex styling technique.
- Pink sunray dial: This delicate, brushed pink dial is less common, offering a feminine and dynamic color signature.
- Performance calibre: The Calibre 2236 delivers strong precision and stability thanks to Syloxi and Paraflex enhancements.
- Comfort features: The Easylink extension link allows minor adjustments in wear length without tools — practical yet premium.
Conclusion
The Rolex Datejust 31 Ref. 278344RBR-0021 is a sophisticated choice for those seeking both luster and substance. With its diamond bezel, pink sunray dial, elegant Rolesor case, and high-performance movement, it transcends ordinary dress watches. It speaks of refined taste and everyday versatility — ideal for women who appreciate luxury, precision, and subtle distinction.
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