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The Rolex Datejust 31 blends classic elegance with refined detailing. Ref. 278381RBR features a chocolate dial, diamond-set bezel, and Rolesor combination of Oystersteel and Everose gold, paired with the Jubilee bracelet for a sophisticated and versatile design.
General Specifications
- Reference: 278381RBR
- Collection: Datejust 31
- Case Size: 31 mm
Case
- Material: Oystersteel and 18K Everose gold (Rolesor)
- Construction: Monobloc middle case, screw-down case back
- Bezel: Diamond-set bezel in Everose gold
- Crown: Screw-down Twinlock waterproofness system
- Crystal: Scratch-resistant sapphire with Cyclops lens
Water Resistance
- Rating: 100 meters / 330 feet (10 ATM)
Movement
- Type: Self-winding automatic (Perpetual)
- Calibre: Rolex 2236 (in-house)
- Power Reserve: Approximately 55 hours
- Accuracy: −2/+2 seconds per day
- Technology: Syloxi silicon hairspring, high precision regulation
Functions
- Hours, minutes, seconds
- Date display at 3 o’clock with Cyclops
- Instantaneous date with rapid setting
- Stop-seconds for precise time setting
Dial
- Color: Chocolate brown
- Finish: Sunburst
- Hour Markers: Diamond-set hour markers
- Feature: Warm tone harmonizing with Everose gold elements
Bracelet
- Type: Jubilee (five-piece links)
- Material: Oystersteel and Everose gold
- Clasp: Folding Oysterclasp with Easylink extension
Technical Notes
- Calibre 2236 uses a silicon hairspring for enhanced stability and precision
- Rolesor construction combines durability of steel with elegance of gold
- Diamond bezel and markers emphasize a high-jewelry aesthetic while retaining everyday usability
