Model case

Model case

Oyster, 36 mm, white gold

Oyster architecture

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

Diameter

36 mm

Material

18 ct white gold

Bezel

Fluted

Winding crown

Screw-down, Twinlock double waterproofness system

Crystal

Scratch-resistant sapphire, Cyclops lens (2.5x) over the date

Water-resistance

Waterproof to 100 metres / 330 feet

Movement

Movement

Perpetual, mechanical, self-winding

Calibre

3155, Manufacture Rolex

Functions

Centre hour, minute and seconds hands. Instantaneous date and day in windows on the dial with rapid setting. Stop seconds for precise time setting

Precision

Officially certified Swiss chronometer (COSC)

Oscillator

Paramagnetic blue Parachrom hairspring

Winding

Bidirectional self-winding via Perpetual rotor

Bracelet

Bracelet

Oyster, flat three-piece links

Bracelet material

18 ct white gold

Clasp

Concealed folding Crownclasp

Dial

Dial

White mother-of-pearl set with diamonds

Gem-setting

Diamonds in 18 ct gold settings and baguette-cut diamonds at 6 and 9 oclock

From its launch in 1956, the Day-Date was immediately recognized as the watch worn by influential people. The Day-Date was the first calendar wristwatch to display the day, as well as the date, in its entirety. Faithful to its noble origins, the Day-Date is made exclusively of gold or platinum, the most precious metals.