Rolex Datejust 31 Reference278285RBR

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Description reviews

Model case
Oyster, 31 mm, Everose gold and diamonds
Oyster architecture
Monobloc middle case, screw-down case back and winding crown
Diameter
31 mm
Material
18 ct Everose gold
Bezel
Set with diamonds
Winding crown
Screw-down, Twinlock double waterproofness system
Crystal
Scratch-resistant sapphire, Cyclops lens over the date
Water resistance
Waterproof to 100 metres / 330 feet
Movement
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
Oscillator
Syloxi hairspring in silicon with patented geometry. High-performance Paraflex shock absorbers
Winding
Bidirectional self-winding via Perpetual rotor
Power reserve
Approximately 55 hours
Bracelet
President, semi-circular three-piece links
Material
18 ct Everose gold
Clasp
Concealed folding Crownclasp
Dial
Rosé-colour set with diamonds
Gem settings
Diamonds in 18 ct gold settings