Women’s Rolex Datejust 31 Ref. 278344RBR Dark Grey Diamond Dial Automatic Watch

The Rolex Datejust 31 (Ref. 278344RBR) blends refined luxury with Swiss precision. Crafted in White Rolesor — combining Oystersteel and 18 kt white gold — this 31 mm timepiece features a domed bezel set with diamonds and a dark grey dial. Designed for clarity and elegance, it includes a Chromalight display with long-lasting blue luminescence. Powered by the Manufacture Rolex Calibre 2236 automatic movement, it delivers −2/+2 seconds per day accuracy and a 55-hour power reserve. The iconic Jubilee bracelet with concealed Crownclasp completes this sophisticated design.

Specifications:
Gender: Women’s
Collection: Datejust 31
Reference: 278344RBR
Movement Type: Perpetual, Mechanical, Self-Winding
Calibre: 2236, Manufacture Rolex
Precision: −2/+2 seconds per day (after casing)
Functions: Centre hour, minute and seconds hands. Instantaneous date with rapid setting. Stop-seconds for precise time setting
Power Reserve: Approximately 55 hours
Dial: Dark grey
Details: Highly legible Chromalight display with long-lasting blue luminescence
Case Shape: Round
Material: White Rolesor (Oystersteel and white gold)
Bezel: Domed, set with diamonds
Case Architecture: Monobloc middle case, screw-down case back and winding crown
Crown: Screw-down, Twinlock double waterproofness system
Crystal: Scratch-resistant sapphire, Cyclops lens over the date
Dimension: 31 mm
Water Resistance: Waterproof to 100 metres / 330 feet
Oscillator: Syloxi silicon hairspring with patented geometry. High-performance Paraflex shock absorbers
Winding: Bidirectional self-winding via Perpetual rotor
Bracelet: Jubilee, five-piece links
Bracelet Material: Oystersteel
Clasp: Concealed folding Crownclasp

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