Bezel: Bidirectional rotatable 24-hour graduated bezel. Two-colour blue and black Cerachrom insert in ceramic, engraved numerals and graduations
Winding crown: Screw-down, Triplock triple waterproofness system
Crystal: Scratch-resistant sapphire, Cyclops lens over the date
Water-resistance: Waterproof to 100 metres / 330 feet
Movement: Perpetual, mechanical, self-winding, GMT function
Functions: Centre hour, minute and seconds hands. 24-hour display. Second time zone with independent rapid-setting of the hour hand. Instantaneous date. Stop-seconds for precise time setting
Winding: Bidirectional self-winding via Perpetual rotor
Clasp: Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link
Details: Highly legible Chromalight display with long-lasting blue luminescence
Certification: Superlative Chronometer (COSC + Rolex certification after casing)
The dial is the distinctive face of a Rolex watch,
the feature most responsible for its identity and readability.
Characterised by hour markers fashioned from 18 ct gold
to prevent tarnishing, every Rolex dial is designed
and manufactured in-house, largely by hand to ensure perfection.
The Jubilee bracelet
The design, development and production
of Rolex bracelets and clasps,
as well as the stringent tests they face,
involve advanced high technology.
And, as with all the components of the watch,
aesthetic controls by the human eye guarantee
impeccable beauty. The Jubilee, a supple and
comfortable five-piece link metal bracelet,
was designed and made especially
for the launch of the Oyster Perpetual Datejust in 1945.
The new calibre 3285, a new-generation movement
entirely developed and manufactured by Rolex.
With 10 patent applications filed over the
course of its development, this movement
features a Chronergy escapement and a guaranteed
power reserve of approximately 70 hours.
Like all Rolex Perpetual movements,
the 3285 is a certified Swiss chronometer,
a designation reserved for high-precision
watches that have successfully passed the
Swiss Official Chronometer Testing Institute (COSC) tests.
The 3285 is equipped with a Parachrom hairspring,
offering greater resistance to shocks
and to temperature variations.
Its architecture, in common with all Oyster
watch movements, makes it singularly reliable.
Rolex uses Oystersteel for its steel watch cases.
Specially developed by the brand, Oystersteel belongs
to the 904L steel family, alloys most commonly used in
high-technology and in the aerospace and chemical
industries, where maximum resistance to corrosion is essential.
Oystersteel is extremely resistant, offers an exceptional
finish once polished and maintains its
beauty even in the harshest environments.
A 24-hour rotatable bezel
In addition to conventional hour,
minute and seconds hands,
the GMT-Master II features
an arrow-tipped hand, which circles
the dial once every 24 hours, as well as
a bidirectional rotatable 24-hour graduated bezel.
The distinctively coloured 24-hour hand displays the
“home” reference time in a first time zone
which can be read on the graduations on the bezel.
The traveller’s local time is easily set
by “jumping” from hour to hour,
thanks to an ingenious mechanism operated
via the winding crown: the hour hand
can be adjusted forwards or backwards
independently of the minute and seconds hands.
This allows travellers to adapt to their new time zone
without affecting the precision of their timekeeping.