Rolex DAY-DATE 40 -m228348rbr-0039

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)