THE OYSTER PERPETUAL DAY-DATE 40 IN 18 CT YELLOW GOLD, WITH AN ONYX, DIAMOND-SET DIAL, DIAMOND-SET BEZEL AND A PRESIDENT BRACELET.
Its dial features 10 baguette-cut diamonds. The Day-Date was the first watch to indicate the day of the week spelt out in full
when it was first presented in 1956.
• #### MODEL CASE
MODEL CASE
Oyster, 40 mm, yellow gold and diamonds
OYSTER ARCHITECTURE
Monobloc middle case, screw-down case back and winding crown
DIAMETER
40 mm
MATERIAL
18 ct yellow gold
BEZEL
Set with diamonds
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
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
BRACELET
President, semi-circular three-piece links
BRACELET MATERIAL
18 ct yellow gold
CLASP
Concealed folding Crownclasp
• #### DIAL
DIAL
Onyx set with diamonds
GEM SETTING
10 baguette-cut diamonds
• #### CERTIFICATION
CERTIFICATION
Superlative Chronometer (COSC + Rolex certification after casing)
