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Model case

Crystal

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

Water-resistance

Waterproof to 100 metres / 330 feet

Model case

Oyster, 36 mm, yellow gold

Bezel

Domed

Diameter

36 mm

Winding crown

Screw-down, Twinlock double waterproofness system

Oyster architecture

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

Material

18 ct yellow gold

Movement

Calibre

3155, Manufacture Rolex

Model case

Perpetual, mechanical, self-winding

Oscillator

Paramagnetic blue Parachrom hairspring

Winding

Bidirectional self-winding via Perpetual rotor

Precision

Officially certified Swiss chronometer (COSC)

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

Bracelet

Clasp

Concealed folding Crownclasp

Bracelet material

18 ct yellow gold

Bracelet

Oyster, flat three-piece links

Dial

Dial

White

From its launch in 1956, the Day-Date was immediately recognized asВ 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.