Women’s Rolex Datejust 31 278289RBR Automatic Watch – Bright Black Dial with Diamonds & White Gold President Bracelet

The Rolex Datejust 31 (Ref. 278289RBR) embodies refined luxury in a compact design. Its 31 mm 18 kt white gold case with diamond-set bezel frames a striking bright black dial. Driven by the Rolex Calibre 2236 self-winding movement, it offers precision timekeeping with a 55-hour power reserve. The elegant President bracelet with concealed folding Crownclasp ensures a seamless fit while scratch-resistant sapphire crystal and 100-meter water resistance make it both beautiful and practical.

Specifications:
Gender: Women’s
Collection: Datejust 31
Reference: 278289RBR
Movement Type: Perpetual, Mechanical, Self-winding
Calibre: 2236, Manufacture Rolex
Precision: -2/+2 sec/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
Oscillator: Syloxi hairspring in silicon with patented geometry; High-performance Paraflex shock absorbers
Winding: Bidirectional self-winding via Perpetual rotor
Dial Color: Bright black
Case Shape: Round
Case Material: 18 kt white gold
Bezel: Set with diamonds
Crystal: Scratch-resistant sapphire, Cyclops lens over the date
Case Back: Screw-down case back
Crown: Screw-down, Twinlock double waterproofness system
Diameter: 31 mm
Water Resistance: 100 metres / 330 feet
Bracelet: President, semi-circular three-piece links (18 kt white gold)
Clasp: Concealed folding Crownclasp

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