Sky-Dweller
| CATEGORY | Oyster Perpetual Classic |
| Certification | Superlative Chronometer (COSC + Rolex certification after casing) |
| Case | Oyster (monobloc middle case, screw-down case back and winding crown) |
| Diameter | 42mm |
| Material | Oystersteel and 18 ct white gold (White Rolesor) |
| Middle Case | Oystersteel, polished finish |
| Bezel | 18 ct white gold, fluted, bidirectional rotatable Ring Command for function setting |
| Case back | Solid, screw down with fine 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) |
| Movement | |
| Calibre | 9001, 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 Reference time (home time) via off-centre 24-hour disc Second time zone (local time) via conventional hands, independent rapid-setting of the hour hand Instantaneous annual calendar with Saros system: date at 3 o’clock with bidirectional secure rapid-setting, month display via 12 apertures around the circumference of the dial 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 |
| Jewelling | 40 rubies |
| Power Reserve | Approximately 72 hours |
| Dial | |
| Colour | Dweller_English_2018 clean Blue, sunray finish |
| Hour Markers | Index hour markers in 18 ct white gold, Chromalight (long-lasting lumiescence, blue glow) |
| Hands | 18 ct white gold, Chromalight (long-lasting lumiescence, blue glow) |
| Bracelet | |
| Type | Oyster, three-piece solid links |
| Material | Oystersteel, polished centre links, satin-finished outer links with polished edges |
| Clasp | Folding Oysterclasp Easylink 5 mm comfort extension link |
Featured image ©Rolex
