Datejust 31 White Roman Dial Diamond Bezel Steel 18KT Yellow Gold Oyster M278383RBR-0001
The Rolex Lady-Datejust 31 Reference M278383RBR-0001 is a luxurious and striking timepiece, combining the elegant two-tone aesthetic with dazzling diamond embellishment. This model features a clean White Dial with Roman numerals, a magnificent Diamond-Set Bezel, and the robust Oyster bracelet, all presented in the iconic Rolesor Yellow Gold design (Oystersteel and 18K Yellow Gold).
The watch features a robust monobloc middle case in durable Oystersteel (Stainless Steel), ensuring reliability and strength in the mid-size 31 mm size. The case is water-resistant to 100 metres (330 feet), secured by the screw-down Twinlock winding crown.
The case is framed by the highly luxurious Diamond-Set Bezel. The ‘RBR’ (Rolex Briolette-cut Rims) or similar codes often indicate an enhanced diamond setting, where the brilliant-cut diamonds are meticulously set edge-to-edge in solid 18K Yellow Gold, maximizing the watch’s brilliance and luxury appeal.
The timepiece is fitted with the robust, three-piece link Oyster bracelet, known for its strength and slightly sportier appearance compared to the Jubilee. Crafted in a two-tone Rolesor Yellow Gold style, the outer links are in satin-finished Oystersteel while the center links are in polished 18K Yellow Gold. The bracelet fastens securely with the folding Oysterclasp, which includes the Easylink 5 mm comfort extension link.
Key Features
| Case | |
| Material | Oystersteel and 18K Yellow Gold (Rolesor Yellow Gold) |
| Dimensions | 31 mm (Modern mid-size) |
| Water Resistance | 100 metres (330 feet) |
| Bezel | Diamond-Set (Enhanced Setting, in 18K Yellow Gold) |
| Crystal | Scratch-resistant Sapphire with Cyclops lens |
| Reference | 278383RBR (Specific dial code: 0001) |
| Dial | |
| Color | White (Lacquer finish) |
| Markers | Roman Numerals (Crafted in 18K Yellow Gold) |
| Aesthetic | High-jewelry appeal with a classic white dial, paired with the robust Oyster bracelet |
| Movement | |
| Type | Perpetual, mechanical, self-winding |
| Power Reserve | Approx. 55 hours |
| Caliber | Calibre 2236 (Featuring Syloxi hairspring) |
| Technology | Superlative Chronometer |
| Bracelet/Strap | |
| Material | Oyster (three-piece links) in Rolesor Yellow Gold (Steel & Yellow Gold) |
| Clasp | Folding Oysterclasp with Easylink 5mm extension |
| Additional Info | |
| Watch Style | Rolesor Yellow Gold High-Jewelry Dress Watch |
| Construction | Steel Case/Outer Links with 18K Yellow Gold Diamond Bezel/Center Links |
| Key Features | Diamond Bezel, Classic White Roman Dial, Calibre 2236, Oyster Bracelet |
| Note | The ‘383’ suffix indicates a Datejust 31 in Rolesor Yellow Gold with a diamond-set bezel. This model combines the flash of the diamond bezel with the daily wearability of the Oyster bracelet. |
The centerpiece is the crisp, highly legible White Dial. The pure white lacquer finish provides a bright, classic backdrop that maximizes the contrast and readability of the Roman numerals.
The hours are marked by applied Roman Numerals, crafted from 18K Yellow Gold to match the Rolesor accents. The date is displayed at 3 o’clock, magnified beneath the Cyclops lens.
Under the dial lies the high-performance Calibre 2236 movement. This self-winding mechanical movement incorporates the patented Syloxi hairspring, providing exceptional performance, accuracy, and reliability, and is certified as a Superlative Chronometer, completing this distinguished timepiece.








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