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Specifications from Press Kit



Oyster Perpetual Yacht-master 40

Reference (case – bracelet): 116655 – Oysterflex bracelet

CASE
Type: Oyster (monobloc middle case, screw-down case back and winding crown)
Diameter: 40 mm
Material: 18 ct Everose gold, polished finish
Bezel: Bidirectional rotatable 60-minute graduated bezel with matt black Cerachrom insert in ceramic, polished raised numerals and graduations
Caseback: Screw-down with Rolex fluting
Winding Crown: Screw-down, Triplock triple waterproofness system
Crown Guard: Integral part of the middle case
Crystal: Scratch-resistant sapphire, cyclops lens over the date, double anti-reflective coating
Waterproofness: 100 metres (330 feet)

MOVEMENT
Calibre: 3135, Manufacture Rolex
Mechanical movement with bidirectional self-winding via Perpetual rotor
Precision: Officially certified Swiss chronometer (COSC)
Functions: Centre hour, minute and seconds hands, instantaneous date at 3 o’clock with rapid setting, stop-seconds for precise time setting
Oscillator: Frequency: 28,800 beats/hour (4 Hz), Paramagnetic blue Parachrom hairspring, Breguet overcoil ,Large balance wheel with variable inertia, High-precision regulating via four gold Microstella nuts, Traversing balance bridge
Jewelling: 31 rubies
Power Reserve: Approximately 48 hours

DIAL
Colour: Black, matt finish
Hour markers: Highly legible Chromalight appliques (long-lasting luminescence) in 18 ct pink gold
Hands: 18 ct pink gold, Chromalight

BRACELET
Type: Oysterflex
Material: Flexible metal blades overmoulded with high-performance elastomer
Clasp: Oysterlock folding safety clasp in 18 ct Everose gold