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OYSTER PERPETUAL COSMOGRAPH DAYTONA
CASE
Type OYSTER (monobloc middle case, screw-down case back,
winding crown and chronograph pushers)
Diameter 40 mm
Material 18 ct EVEROSE gold, polished finish
Case back Screw-down with Rolex fluting
Bezel Monobloc black CERACHROM with engraved numerals filled
with pink gold via magnetron cathode sputtering
Winding crown Screw-down, TRIPLOCK triple waterproofness system
Shoulders to protect the crown
Crystal Scratch-resistant sapphire
Waterproofness 100 metres (330 feet)
MOVEMENT
Calibre 4130, Manufacture Rolex
Chronograph movement with column wheel and vertical clutch
Precision Officially certified Swiss chronometer
Functions Chronograph with accuracy to 1/8 th of a second,
30-minute and 12-hour totalizers
Tachymetric scale on the bezel to measure speed
Small seconds hand at 6 o’clock
Stop-seconds for precise time setting
Oscillator Frequency: 28,800 beats/hour (4 Hz)
Non-magnetic blue PARACHROM hairspring
Breguet overcoil
Large balance wheel with variable inertia
High-precision regulating via four gold MICROSTELL A nuts
Traversing balance bridge
Jewelling 44 rubies
Winding Bidirectional self-winding via PERPETUAL rotor on ball bearings
Power reserve Approximately 72 hours
DIALS
Chocolat
e brown, totalizer borders in 18 ct pink gold
Hour markers Gold Arabic numerals, black PVD; phosphorescent hour markers
at 3, 6 and 9 o’clock
Hands 18 ct pink gold, filled with phosphorescent material
Iv
ory coloured, snailed totalizers in 18 ct pink gold
Hour markers 18 ct pink gold appliques, filled with phosphorescent material
Hands 18 ct pink gold, filled with phosphorescent material
STRAP
Material Black Alligator mississippiensis leather
Clasp 18 ct EVEROSE gold OYSTERLOCK folding clasp with safety catch
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Отсюда:
http://www.perpetuelle.com/UsrViewFo...e=Keyword_Tags
