Cosmograph Daytona
| CATEGORY | Oyster Perpetual Professional |
| Certification | Superlative Chronometer (COSC + Rolex certification after casing), international five-year guarantee |
| Case | Oyster (monobloc middle case, screw-down case back, winding crown and chronograph pushers) |
| Diameter | 40mm |
| Material | 18 ct white gold |
| Middle Case | 18 ct white gold, polished finish |
| Bezel | Cerachrom in black ceramic with tachymetric scale; moulded, recessed numerals, graduations and inscriptions coated with platinum via PVD (Physical Vapour Deposition) |
| Case back | Solid, screw down with fine fluting |
| Winding Crown | Screw-down; Triplock triple waterproofness system |
| Crystal | Scratch-resistant sapphire |
| Waterproofness | 100 metres (330 feet) |
| Movement | |
| Calibre | 4130, Manufacture Rolex Mechanical chronograph movement with column wheel and vertical clutch Bidirectional self-winding via Perpetual rotor |
| Precision | -2/+2 sec./day, after casing |
| Functions | Centre hour and minute hands, small seconds hand at 6 o’clock Chronograph (centre hand) accurate to within 1/8th of a second 30-minute counter at 3 o’clock and 12-hour counter at 9 o’clock Stop-seconds for exact time setting |
| Oscillator | Frequency: 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 |
| Jewelling | 44 rubies |
| Power Reserve | Approximately 72 hours |
| Dial | |
| Colour | Steel, gloss, sunray finish; black counters |
| Hour Markers | 18 ct white gold, highly legible Chromalight (long-lasting luminescence, blue glow) |
| Hands | 18 ct white gold, highly legible Chromalight (long-lasting luminescence, blue glow), except on centre seconds hand and counter hands |
| Bracelet | |
| Oysterflex Flexible metal blades overmoulded with high-performance elastomer Oysterlock folding safety clasp in 18 ct white gold Easylink comfort extension link (approx. 5 mm) |
Featured image ©Rolex
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