Reference
228238
Model case
Oyster, 40 mm, yellow gold
Water-resistance
Waterproof to 100 metres / 330 feet
Bezel
Fluted
Dial
Onyx set with diamonds
Bracelet
President, semi-circular three-piece links
Movement
Perpetual, mechanical, self-winding
Calibre
3255, Manufacture Rolex
Power reserve
Approximately 70 hours
Certification
Superlative Chronometer (COSC + Rolex certification after casing)
Onyx dial
Fluted bezel
18 kt yellow gold