THE OYSTER CASE, SYMBOL OF WATERPROOFNESS AND ELEGANCE
The Lady-Datejust’s Oyster case, guaranteed waterproof to a depth of 100 metres (330 feet), is a paragon of robustness, proportion and elegance. The characteristically shaped middle case is crafted from a solid block of particularly corrosion-resistant Oystersteel, 18 ct gold, or 950 platinum. The case back, edged with fine fluting, is hermetically screwed down with a special tool that allows only certified Rolex watchmakers to access the movement. The winding crown, fitted with the Twinlock double waterproofness system, screws down securely against the case. The crystal, with a Cyclops lens at 3 o’clock for easy reading of the date, is made of virtually scratchproof sapphire. The waterproof Oyster case provides optimal protection for the Lady-Datejust’s high-precision movement.
PERPETUAL CALIBRE 2236
The Lady-Datejust is equipped with calibre 2236, a self-winding mechanical movement entirely developed and manufactured by Rolex. The architecture, manufacturing and innovative features of this movement make it exceptionally precise and reliable.
The oscillator has a large balance wheel with variable inertia regulated extremely precisely via gold Microstella nuts. It is held firmly in place by a height-adjustable traversing bridge enabling very stable positioning to increase shock resistance.
Calibre 2236 features a Syloxi hairspring in silicon, patented and manufactured by Rolex. Insensitive to magnetic fields, the Syloxi hairspring provides great stability in the face of temperature variations and remains up to 10 times more precise than a traditional hairspring in case of shocks. Its patented geometry ensures its regularity in any position.
Calibre 2236 is equipped with a self-winding module via a Perpetual rotor, which ensures continuous winding of the mainspring by harnessing the movements of the wrist to provide a constant source of energy.
The movement of the Lady-Datejust will only be seen by certified Rolex watchmakers, yet it is beautifully finished and decorated in keeping with the brand’s uncompromising quality standards.
NEW-GENERATION MOVEMENTS
Calibre 2236 is a new-generation movement entirely developed and manufactured by Rolex for a superlative level of performance. A consummate demonstration of Rolex technology, it offers fundamental gains in terms of precision, power reserve, resistance to shocks and magnetic fields, convenience and reliability.
The oscillator is fitted on high-performance Paraflex shock absorbers, designed and patented by Rolex, which increase the movement’s shock resistance.
Calibre 2236 features a paramagnetic nickel-phosphorus escape wheel and has a power reserve of approximately 55 hours.
OYSTER, JUBILEE OR PRESIDENT BRACELETS
Depending on the version, the Lady-Datejust is available on a three-piece link Oyster bracelet with a folding Oysterclasp; on a five-piece link Jubilee bracelet – created specially for the Datejust in 1945 – with a Crownclasp; or on a three-piece link President bracelet with a Crownclasp. The Lady- Datejust’s Oyster bracelet also features the Easylink comfort extension link, developed by Rolex, which allows the wearer to easily increase the bracelet length by approximately 5 mm, for additional comfort in any circumstance.
A concealed attachment system on the bracelet ensures seamless visual continuity between the bracelet and case. On the 18 ct gold and 950 platinum versions, the Oyster and President bracelets include ceramic inserts inside the links to enhance their flexibility and longevity.