Rolex Day-Date

Rolex Day-Date

CATEGORYOyster Perpetual Classic
CertificationSuperlative Chronometer (COSC + Rolex certification after casing), international five-year guarantee
CaseOyster (monobloc middle case, screw-down case back and winding crown)
Diameter40mm/36mm
Material18 ct yellow gold
Middle Case18 ct yellow gold, polished finish
Bezel18 ct yellow gold, fluted
Case backSolid, screw-down with fine fluting
Winding CrownScrew-down; Twinlock double waterproofness system
CrystalScratch-resistant sapphire
Cyclops lens over the date with double anti-reflective coating
Waterproofness100 metres (330 feet)
Movement
Calibre3255, Manufacture Rolex
Mechanical movement with bidirectional self-winding via Perpetual rotor
Precision-2/+2 sec./day, after casing
FunctionsCentre hour, minute and seconds hands
Instantaneous date and date at12 and 3 o’clock with secure rapid-setting
Stop-seconds for exact time setting
OscillatorFrequency: 28,800 beats/hour (4Hz)
Paramagnetic blue Parachrom hairspring
Rolex overcoil
Large balance wheel with variable inertia
High-precision regulating via four gold Microstella nuts
Traversing balance bridge
High-performance Paraflex shock absorbers
EscapementChronergy with optimised energy efficiency
Paramagnetic nickel-phosphorus pallet fork and escape wheel
Jewelling31 rubies
Power ReserveApproximately 70 hours
Dialwhite lacquer
Appliques and faceted deconstructed Roman numerals in 18 ct yellow gold
Hands in 18 ct yellow gold
Green ombré, gloss, sunray finish
8 diamonds in 18 ct yellow gold settings
2 baguette-cut diamonds in 18 ct yellow gold settings at 6 and 9 o’clock Hands in 18 ct yellow gold
BraceletPresident, three-piece solid links
18 ct yellow gold, polished centre links, satin-finished outer lnks with polished edges, ceramic inserts
Concealed folding Crownclasp

Featured image ©Rolex