OYSTER PERPETUAL YACHT

OYSTER PERPETUAL
YACHT-MASTER II
OYSTER PERPETUAL YACHT-MASTER II
As they move to the line for the start of the legendary Rolex Fastnet Race off the southern coast of
England in August 2013, skippers will be able to trust the pioneering mechanical countdown of their
Rolex Oyster Perpetual YACHT- MASTER II regatta chronograph in order to cross the line as soon
as possible after the starting gun. This chronometer-certified professional regatta chronograph is a
marriage of state-of-the-art technology and time-honoured tradition – like the regatta yachts themselves.
At BASELWORLD 2013, Rolex is introducing a new version of the Oyster Perpetual YACHT- MASTER II.
Rolex’s revolutionary regatta chronograph, launched in 2007, is available for the first time in 904L steel,
fitted with a CERACHROM bezel insert in blue ceramic. A high-performance timekeeping instrument,
designed for professional skippers as well as yachting enthusiasts, the new YACHT- MASTER II is a pure
example of Rolex expertise in terms of precision, functions and reliability.
PROGRAMMABLE COUNTDOWN AND RING COMMAND BEZEL
The YACHT- MASTER II features an exclusive function developed by Rolex: a countdown which can
be programmed from 1 to 10 minutes and incorporates a mechanical memory, allowing it to be reset
to the same countdown duration. Once launched, it can also be synchronized on the fly, enabling it to
be adjusted to match the official regatta countdown. The countdown function responds ideally to the
need for precise timing during the crucial starting sequence of a regatta. Although technically complex,
it is essentially very simple to use: the countdown programming is accessed via the rotatable RING
COMMAND bezel, an innovative interface between bezel and movement developed by Rolex.
CALIBRE 4161, REGATTA CHRONOGRAPH
AND SUPERLATIVE CHRONOMETER
The YACHT- MASTER II is equipped with calibre 4161, a self-winding
mechanical chronograph movement with a column wheel entirely
developed and manufactured by Rolex. Like all Rolex PERPETUAL
movements, the 4161 is a certified Swiss chronometer, a designation
reserved for high-precision watches that have successfully passed the
Swiss Official Chronometer Testing Institute (COSC) tests. Its design
and quality manufacture provide peerless precision and reliability.
The oscillator, the true heart of the watch, has a blue PARACHROM
hairspring patented and manufactured by Rolex in an exclusive alloy.
Insensitive to magnetic fields, the PARACHROM hairspring offers
great stability when exposed to temperature variations and remains up
to 10 times more precise in case of shocks than a traditional hairspring.
SOLID-LINK BRACELET WITH SAFETY CLASP
The new YACHT- MASTER II’s solid-link OYSTER bracelet in 904L
steel is fitted with an OYSTERLOCK safety clasp that prevents
accidental opening. It also features the ingenious Rolex-patented
EASYLINK rapid extension system that allows the wearer to easily
increase the bracelet length by approximately 5 mm, for additional
comfort in any circumstance.
THE OYSTER CASE, SYMBOL OF WATERPROOFNESS AND ROBUSTNESS
The YACHT- MASTER II’s 44 mm OYSTER case, guaranteed waterproof to a depth of 100 metres
(330 feet), is a paragon of robustness, proportion and elegance. The characteristically shaped middle
case is crafted from a solid block of particularly corrosion-resistant 904L steel. The fluted case back is
hermetically screwed down with a special tool exclusive to Rolex watchmakers. The winding crown,
fitted with the patented TRIPLOCK triple waterproofness system, screws down securely against the
case. It is protected by a crown guard that forms an integral part of the middle case. The crystal is made
of virtually scratchproof sapphire. The waterproof OYSTER case ensures optimal protection for the
YACHT- MASTER II’s high-precision movement.
For texts and visuals: BASELWORLDPRESSKIT.ROLEX.COM
OYSTER PERPETUAL YACHT-MASTER II
REFERENCE (CASE – BRACELET): 116680 – 78210
CASE
Type
OYSTER (monobloc middle case, screw-down case back
and winding crown)
Diameter
44 mm
Material
904L stainless steel superalloy, satin and polished finish
Case back
Screw-down with Rolex fluting
Bezel
Bidirectional 90° rotatable RING COMMAND bezel
Blue CERACHROM insert in ceramic, engraved numerals
and inscription coated with platinum via magnetron sputtering
Winding crown Screw-down, TRIPLOCK triple waterproofness system
Crown guard
Integral part of the middle case
Crystal Scratch-resistant sapphire
Waterproofness 100 metres (330 feet)
MOVEMENT
Calibre4161, Manufacture Rolex
Mechanical chronograph movement with column wheel
and vertical clutch
Bidirectional self-winding via PERPETUAL rotor on ball bearing
Precision
Officially certified Swiss chronometer (COSC)
Functions
Centre hour and minute hands, small seconds hand at 6 o’clock
Programmable regatta countdown with mechanical memory,
retrograde minute hand, on-the-fly synchronization of the countdown
seconds and minute hands
Stop-seconds for precise time setting
Oscillator
Frequency: 28,800 beats/hour (4Hz)
Paramagnetic blue PARACHROM hairspring
Breguet overcoil
Large balance wheel with variable inertia
High-precision regulating via four gold MICROSTELLA nuts
Traversing balance bridge
Jewelling
42 rubies
Power reserve
Approximately 72 hours
DIAL
Colour
Matt white lacquer, blue lacquer small seconds counter
with 18 ct white gold border
Hour markers
Highly legible CHROMALIGHT appliques (long-lasting luminescence)
in 18 ct white gold with blue PVD coating
Hands
CHROMALIGHT hands in blued 18 ct gold, red seconds hand
BRACELET
Type
OYSTER, three-piece solid links
Material
904L stainless steel superalloy, polished centre links, satin-finished
outer links with polished edges
Clasp
Folding OYSTERLOCK safety clasp
EASYLINK 5 mm comfort extension link