Rolex Explorer II
CATEGORY | Oyster Perpetual Professional |
Certification | Superlative Chronometer (COSC + Rolex certification after casing) |
Case | |
Type | Oyster (monobloc middle case, screw-down case back and winding crown) |
Diameter | 42mm |
Safety | Crown guard forms integral part of middle case |
Material | Oystersteel |
Middle Case | Oystersteel, satin finish with polished sides |
Bezel | Oystersteel, fixed, 24-hour graduated |
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 | 3187, 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, secure setting via the hour hand Reference time (home time) via additional 24-hour hand Second time zone (local time) via conventional hands, independent rapid-setting of the hour hand 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 | 31 rubies |
Power Reserve | Approximately 48 hours |
Dial | |
Colour | White lacquer |
Hour Markers | Highly legible Chromalight appliques (long-lasting luminescence, blue glow) in 18 ct white gold with black PVD coating |
Hands | 18 ct white gold, black PVD coating (except orange 24-hour hand) Chromalight (long-lasting luminescence, blue glow) |
Bracelet | |
Type | Oystersteel, three-piece solid links |
Material | Oystersteel, satin finish with polished edges |
Clasp | Oysterlock folding safety clasp Easylink 5mm comfort extension link |
Featured image ©Rolex