ROLEX DAY-DATE 40 228238

Model case

Oyster, 40 mm, yellow gold

Oyster architecture

Monobloc middle case, screw-down case back and winding crown

Diameter

40 mm

Material

18 kt yellow gold

Bezel

Fluted

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