Oyster Perpetual

Oyster Perpetual

CATEGORYOyster Perpetual Classic
CertificationSuperlative Chronometer (COSC + Rolex certification after casing)
CaseOyster (monobloc middle case, screw-down case back and winding crown)
Diameter39mm/36mm/34mm/31mm/26mm
MaterialOystersteel
Middle CaseOystersteel, satin finish polished sides
BezelOystersteel, Domed
Case backSolid, screw down with fine fluting
Winding CrownScrew-down; Twinlock double waterproofness system
CrystalScratch-resistant sapphire
Waterproofness100 metres (330 feet)
Movement
Calibre3132, Manufacture Rolex
Mechanical movement with bidirectional self-winding via Perpetual rotor
Precision-2/+2 sec./day, after casing
FunctionsCentre hour, minute and seconds hands
Stop-seconds for exact time setting
OscillatorFrequency: 28,800 beats/hour (4Hz)
Paramagnetic blue Parachrom hairspring
Rolex overcoil
Large balance wheel with variable inertia
Paramagnetic nickel-phosphorus escape wheel
High-precision regulating via four gold Microstella nuts
Traversing balance bridge
High-performance Paraflex shock absorbers
Jewelling31 rubies
Power ReserveApproximately 48 hours
Dial
ColourMatt white
Hour Markers18 ct white gold appliques with phosphorescent material (green glow)
Hands18 ct white gold with phosphorescent material (green glow)
Bracelet
TypeOyster, three-piece solid links
MaterialOystersteel, satin finish with polished edges
ClaspFolding Oysterclasp

Featured image ©Rolex