Yacht-Master
| 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 and winding crown) |
| Safety | Integral crown guard |
| Diameter | 42mm |
| Material | 18 ct white gold |
| Middle Case | 18 ct white gold, polished finish |
| Bezel | 18 ct white gold, bidirectional rotatable 60-minute graduated Cerachrom insert in matt black ceramic; polished, raised graduations and numerals, first 15 minutes graduated minute-by-minute |
| Case back | Solid, screw down with fine fluting |
| Winding Crown | Screw-down; Triplock triple waterproofness system |
| Crystal | Scratch-resistant sapphire Cyclops lens over the date with double anti-reflective coating |
| Waterproofness | 100 metres (330 feet) |
| Movement | |
| Calibre | 3235, Manufacture Rolex Mechanical movement with bidirectional self-winding via Perpetual rotor |
| Precision | -2/+2 sec./day, after casing |
| Functions | Centre hour, minute and seconds hands Instantaneous date at 3 o’clock with secure rapid-setting 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 High performance Paraflex shock absorbers |
| Escapement | Chronergy with optimized energy efficiency Paramagnetic nickel-phosphorus pallet fork and escape wheel |
| Jewelling | 31 rubies |
| Power Reserve | Approximately 70 hours |
| Dial | |
| Colour | Black lacquer |
| 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) |
| Bracelet | |
| Type | Oysterflex |
| Material | Flexible metal blades overmoulded with high-performance elastomer |
| Clasp | Oysterlock folding safety clasp in 18 ct white gold Rolex Glidelock extension system (approx. 15 mm in increments of approx. 2.5 mm) |
Featured image ©Rolex
