The 178273 pairs the Lady-Datejust’s two-tone Rolesor construction with the sportier Oyster bracelet rather than the traditional Jubilee, creating a combination that leans casual while retaining the warmth of yellow gold plating. At 31mm with a smooth domed bezel, this reference sits at the intersection of dress and sport — equally at home with a business suit or weekend attire. The champagne dial ties the golden elements together into a cohesive, warm-toned package.
Key Specifications
| Specification | Detail |
|---|---|
| Reference | 178273 |
| Case Size | 31mm |
| Case Material | Oystersteel and yellow gold plated |
| Bezel | Smooth domed, yellow gold plated |
| Dial | Champagne |
| Crystal | Sapphire with Cyclops lens |
| Movement | Automatic with date |
| Water Resistance | 30m |
| Bracelet | Oyster, Oystersteel and yellow gold plated |
| Clasp | Oysterclasp with Easylink |
| Functions | Hours, minutes, seconds, date |
The 178273 Up Close: Case, Dial and Bracelet
The champagne dial delivers a warm golden tone that shifts between soft amber and bright gold depending on the light, complementing the yellow gold-plated bezel and bracelet centre links. Applied stick hour markers and matching hands carry luminescent fill for nighttime readability. The smooth domed yellow gold-plated bezel creates a cleaner frame than fluted alternatives, giving the watch a slightly more contemporary feel.
The Oyster bracelet in Rolesor is robust and angular compared to the softer Jubilee, with three-piece links and an Easylink micro-adjustment system for on-the-fly comfort tuning. At 31mm the watch occupies the ideal middle ground in the Lady-Datejust range. View more Oyster-bracelet configurations in the Lady-Datejust collection.
Movement Options: Swiss vs Japanese
Two movement grades are available, each suited to different priorities:
- Swiss automatic — higher beat rate producing a smoother seconds sweep, longer power reserve, and construction that closely follows the genuine caliber design. The choice for those who want the closest mechanical experience.
- Japanese automatic — Miyota-based movement with solid reliability, globally accessible servicing, and proven longevity. A practical option for confident daily wear.
Both movements feature quickset date adjustment and hacking seconds.










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