Yacht-Master

Yacht-Master

CATEGORYOyster Perpetual Professional
CertificationSuperlative Chronometer (COSC + Rolex certification after casing), international five-year guarantee
CaseOyster (monobloc middle case, screw-down case back and winding crown)
SafetyIntegral crown guard
Diameter42mm
Material18 ct white gold
Middle Case18 ct white gold, polished finish
Bezel18 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 backSolid, screw down with fine fluting
Winding CrownScrew-down; Triplock triple waterproofness system
CrystalScratch-resistant sapphire
Cyclops lens over the date with double anti-reflective coating
Waterproofness100 metres (330 feet)
Movement
Calibre3235, Manufacture Rolex
Mechanical movement with bidirectional self-winding via Perpetual rotor
Precision-2/+2 sec./day, after casing
FunctionsCentre hour, minute and seconds hands
Instantaneous date at 3 o’clock with secure rapid-setting
Stop-seconds for exact time setting
OscillatorFrequency: 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
EscapementChronergy with optimized energy efficiency
Paramagnetic nickel-phosphorus pallet fork and escape wheel
Jewelling31 rubies
Power ReserveApproximately 70 hours
Dial
ColourBlack lacquer
Hour Markers18 ct white gold, highly legible Chromalight (long-lasting luminescence, blue glow)
Hands18 ct white gold, highly legible Chromalight (long-lasting luminescence, blue glow)
Bracelet
TypeOysterflex
MaterialFlexible metal blades overmoulded with high-performance elastomer
ClaspOysterlock 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