Rolex |
Rolex |
Model |
Datejust 31 |
Reference Number |
278383RBR-0023 |
CASE |
Model case |
Oyster, 31 mm, Oystersteel, yellow gold and diamonds |
Oyster Architectre |
Monobloc middle case, screw-down case back and winding crown |
Case Diameter |
31 mm |
Material |
Yellow Rolesor – combination of Oystersteel and yellow 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 |
DIAL |
Dial |
Black Mother of Pearl set with diamonds |
Gem settings |
Diamonds in 18 kt gold settings |
BRACELET |
Bracelet Name |
Oyster, three-piece solid links |
Material |
Yellow Rolesor – combination of Oystersteel and yellow gold |
Clasp |
Folding Oysterclasp with Easylink 5 mm comfort extension link |
MOVEMENT |
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 |
COSC Certified |
Superlative Chronometer (COSC + Rolex certification after casing) |