Rolex is introducing a 904L steel version of its classic Oyster Perpetual Lady-Datejust 28, as well as a white Rolesor version (combining 904L steel and 18 ct white gold) with a ﬂuted or gem-set bezel in 18 ct white gold. These new versions are available with a wide choice of dials. As with the gold and the Rolesor versions introduced in 2015 and 2016, these new Lady-Datejust watches feature a redesigned, larger 28 mm case and a new-generation mechanical movement, Calibre 2236, equipped with the Rolex-patented Syloxi hairspring in silicon. Like all Rolex watches, the new versions of the Lady-Datejust 28 carry the Superlative Chronometer certification redefined by Rolex in 2015.
Model: Oyster Perpetual Lady-Datejust 28
Case ref. 279160 | Bracelet ref. 72340
Type: Oyster (monobloc middle case, screw-down case back and winding crown)
Diameter: 28 mm
Material: 904L steel, polished fnish
Case back: Screw-down with Rolex ﬂuting
Winding crown: Screw-down, Twinlock double waterproofness system
Crystal: Scratch-resistant sapphire; Cyclops lens over the date with double anti-reflective coating
Waterproofness: 100 metres (330 feet)
Calibre 2236, Manufacture Rolex
Mechanical movement with bidirectional self-winding via Perpetual rotor
Precision: −2/+2 sec/day, after casing
Oscillator Frequency: 28,800 beats/hour (4 Hz)
Syloxi hairspring in silicon with patented geometry
Balance wheel with variable inertia
High-precision regulating via two gold Microstella nuts
Traversing balance bridge
High-performance Paraﬂex shock absorbers
Jewelling: 31 rubies
Power reserve: Approximately 55 hours
Centre hour, minute and seconds hands
Instantaneous date at 3 o’clock with rapid-setting
Stop-seconds for precise time setting
Colour: Pink, sunray finish
Roman numerals in 18 ct white gold
Hands: 18 ct white gold
Type: Oyster, three-piece solid links
Material: 904L steel, polished centre links, satin-finished outer links with polished edges
Clasp: Folding Oysterclasp
Easylink 5 mm comfort extension link
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