Rolex Day-Date 40

Rolex Day-Date 40

Oyster, 40 mm, white gold

Reference 228239

The Oyster Perpetual Day-Date 40 in 18 ct white gold with a slate dial, fluted bezel and a President bracelet.

Model case
Oyster, 40 mm, white gold
Oyster architecture
Monobloc middle case, screw-down case back and winding crown
Diameter
40 mm
Material
18 ct white 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

Movement
Perpetual, mechanical, self-winding
Calibre
3255, Manufacture Rolex
Precision
-2/+2 sec/day, after casing
Functions
Centre hour, minute and seconds hands. Instantaneous day and date in apertures, unrestricted rapid-setting. Stop-seconds for precise time setting

Oscillator
Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorbers
Winding
Bidirectional self-winding via Perpetual rotor
Power reserve
Approximately 70 hours.

Bracelet
President, semi-circular three-piece links
Material
18 ct white gold
Clasp
Concealed folding Crownclasp

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