Key Features
| Case | Material | Oystersteel and 18K Yellow Gold (Rolesor Yellow Gold) |
| Dimensions | 31 mm (Modern mid-size) | |
| Water Resistance | ( ) | |
| Bezel | Diamond-Set (18K Yellow Gold, typically 46 brilliant-cut diamonds) | |
| Crystal | – | |
| Reference | 278383 (Specific dial code: BKMDJ) | |
| Dial | Color | Black Mother-of-Pearl (MOP) (Iridescent, unique pattern) |
| Markers | 11 Diamond Hour Markers (Set in 18K Yellow Gold) | |
| Aesthetic | Extreme luxury Rolesor Yellow Gold design with dual diamond settings (bezel and dial) and exotic black MOP | |
| Movement | Type | Perpetual, mechanical, self-winding |
| Power Reserve | Approx. 55 hours | |
| Caliber | Calibre 2236 (Featuring Syloxi hairspring) | |
| Technology | Superlative Chronometer | |
| Bracelet/Strap | Material | Jubilee (five-piece links) in Rolesor Yellow Gold (Steel & Yellow Gold) |
| Clasp | Folding Oysterclasp | |
| Additional Info | Watch Style | Rolesor Yellow Gold (Steel/Yellow Gold) High Luxury Dress Watch |
| Certification | ||
| Key Features | Diamond Bezel, Black MOP Diamond Dial, Yellow Gold & Steel Jubilee Bracelet | |
| Construction | Steel Case with 18K Yellow Gold Diamond Bezel and Center Links |
The centerpiece is the exotic Black Mother-of-Pearl Dial with Diamonds. This dial is naturally iridescent, shifting through deep, mysterious tones of black, grey, and deep blue depending on the light. Because MOP is a natural material, every dial is unique. The depth of the black MOP creates a spectacular contrast against the brilliant yellow gold and diamond accents.
The hours are marked by 11 brilliant-cut Diamond Hour Markers (with the Rolex Crown at 12 o’clock), meticulously set in 18K Yellow Gold. These diamonds enhance the dial’s natural luminescence and luxury, perfectly complementing the yellow gold bezel and bracelet accents.
Under the dial lies the robust and precise 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 highly distinguished timepiece.








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