Launched this year, the new version of Oyster Perpetual Cosmograph Daytona comes in a 904L steel case fitted with a monobloc Cerachrom bezel, developed and patented by Rolex, in black ceramic. This latest evolution is a blend of high technology and sleek aesthetics, and pays tribute to the heritage of this legendary chronograph. The black bezel is reminiscent of the 1965 model that was fitted with a black Plexiglas bezel insert. The new Cosmograph Daytona carries the Superlative Chronometer certification redefined by Rolex in 2015, which ensures singular performance on the wrist.
Oyster (monobloc middle case, screw-down case back, winding crown and chronograph pushers)
Diameter: 40 mm
Material: 904L steel, polished finish
Bezel: Black monobloc Cerachrom in ceramic with an engraved tachymetric scale; Numerals and graduations coated with platinum via magnetron sputtering
Case back: Screw-down with Rolex ﬂuting
Winding crown: Screw-down; Triplock triple waterproofness system
Crown guard: Integral part of the middle case
Crystal: Scratch-resistant sapphire
Waterproofness: 100 metres (330 feet)
Calibre 4130, Manufacture Rolex
Mechanical chronograph movement with column wheel and vertical clutch
Bidirectional self-winding via Perpetual rotor on ball bearing
Precision: −2/+2 sec/day, after casing
Jewelling: 44 rubies
Power reserve: Approximately 72 hours
Centre hour and minute hands, small seconds hand at 6 o’clock
Chronograph (centre hand) accurate to within 1/8 of a second
30-minute counter at 3 o’clock and 12-hour counter at 9 o’clock
Stop-seconds for precise time setting
Frequency: 28,800 beats/hour (4 Hz)
Paramagnetic blue Parachrom hairspring
Large balance wheel with variable inertia
High-precision regulating via four gold Microstella nuts
Traversing balance bridge
White lacquer, black snailed counters or Black lacquer, grey snailed counters
Hour markers: 18 ct white gold appliques, Chromalight
Hands: 18 ct white gold, Chromalight
Oyster, three-piece solid links
904L steel, polished centre links, satin-finished outer links with polished edges
Clasp: Oysterlock folding safety clasp; Easylink 5 mm comfort extension link
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