Reference
278243
Model case
Oyster, 31 mm, Oystersteel and yellow gold
Bezel
Domed
Water-resistance
Waterproof to 100 metres / 330 feet
Movement
Perpetual, mechanical, self-winding
Calibre
2236, Manufacture Rolex
Power reserve
Approximately 55 hours
Bracelet
Jubilee, five-piece links
DIAL
White
Certification
Superlative Chronometer (COSC + Rolex certification after casing)