OYST E R P E R P E T UA L
G M T- M A S T E R I I

WEARING THE WATCH
FOR THE FIRST TIME
Before being worn for the first time, or if it has
stopped, a Rolex watch must be wound manuallyin order to function correctly and precisely.
To wind the watch manually, unscrew the winding
crown completely, then turn it several times
clockwise. (Turning in the other direction has
no effect.) A minimum of 25 turns is required foradequate partial winding. The watch will thenbe wound automatically as long as it is worn onthe wrist. Carefully screw the crown back down
against the case to ensure waterproofness.

The green seal accompanying yourRolex watch is a symbol of its status
as a Superlative Chronometer. This
exclusive designation attests that it
has successfully undergone a series of
specific final controls by Rolex in its ownlaboratories in addition to the official
COSC certification of its movement.
This unique testing of its chronometricprecision, waterproofness, self-winding
and reliability pushes back theboundaries of performance and makes
Rolex a benchmark for excellencein mechanical watches. For furtherinformation, please visit rolex.com.

THE HEART OF THE GMT-MASTER II MODELOYSTER PERPETUAL GMT-MASTER IISIMULTANEOUS DUAL TIME ZONE AND ALTERNATIVE TIME ZONE

4-56-7
USING YOUR WATCHOVERVIEWSETTING THE WATCH
EASYLINK COMFORT EXTENSION LINK

8-9
10-19
20-21
ROLEX SERVICECARING FOR YOUR ROLEXAFTER-SALES SERVICEWORLDWIDE SERVICE NETWORK

22-23
24-25
26
ROLEX.COM
27THE HEART OF THE
GMT-MASTER II MODELUSINGYOUR WATCHROLEXSERVICE

5OYSTER PERPETUALGMT-MASTER IIPrecise, reliable and functional, the Oyster
Perpetual GMT-Master II was designed
to allow the time in two different timezones to be read simultaneously: either
the local time and reference time, or the
local time and the time in an alternative
time zone. It features a 24-hour handand a bidirectional rotatable bezel with a
24-hour graduated bezel insert. Its 40 mm
case, waterproof to a depth of 100 metres(330 feet) is a paragon of robustness.
Its dial offers exceptional legibility thanks
to the Chromalight hour markers andhands filled with a luminescent material
emitting a long-lasting blue glow whenin darkness. Its Triplock winding crown,with a triple waterproofness system,
is protected by a crown guard that is
an integral part of the middle case.
The sapphire crystal, with a Cyclops lens
at 3 o’clock, is virtually scratchproof.
The Oyster Perpetual GMT-Master II isequipped with a self-winding mechanicalmovement entirely manufactured by Rolex.
The Oyster Perpetual GMT-Master II
features an Oyster or Jubilee braceletwith an Oysterlock safety clasp and theEasylink comfort extension link.

THE HEART OF THE
GMT-MASTER II MODELUSINGYOUR WATCHROLEXSERVICE6SIMULTANEOUS DUAL TIME ZONE
AND ALTERNATIVE TIME ZONEThe Oyster Perpetual GMT-Master II
allows travellers to simultaneously readtheir local time and reference (home)time. The former is indicated by theconventional hour, minute and seconds
hands. The latter is indicated by thetriangle-tipped 24-hour hand readagainst the graduations on the bezel
when it is in the neutral position(triangle at 12 o’clock).
Local time can be adjusted quickly by
jumps of the hour hand without affecting
either the 24-hour hand or the minutehand. The date change is linked to the7

local time. Thus, the date shown in thewindow always corresponds to thatof the local time.
Turning the bidirectional bezel of theGMT-Master II allows the time in analternative time zone to be displayed(see p. 18). In this case, the referencetime is no longer shown.

THE HEART OF THE
GMT-MASTER II MODELUSINGYOUR WATCHROLEXSERVICEOVERVIEW
Hour hand
Minute hand
Seconds hand
24-hour hand
Date window

Bidirectional rotatable bezel with
24-hour graduated Cerachrom insert
in ceramic
Triplock winding crown withtriple waterproofness system

8THE HEART OF THE
GMT-MASTER II MODELUSINGYOUR WATCHROLEXSERVICE

10SETTING THE WATCH
Screwed-down position (position 0)
The crown is completely screwed down
against the case. When the crownis in this position, the Oyster Perpetual
GMT-Master II is guaranteed waterproof
to a depth of 100 metres (330 feet).

Manual winding (position 1)
The crown is unscrewed. To wind
the watch manually, turn the crownclockwise. (Turning in the other direction
has no effect.) When setting the watch
for the first time or after the watch
has stopped, complete a minimum of25 turns for partial winding.

Unscrew

After every use, carefully screw the crownback down against the case to guarantee thewaterproofness. Return the crown to position 1
and apply light pressure on it while screwing
it down clockwise against the case. The crownshould never be unscrewed underwater.

THE HEART OF THE
GMT-MASTER II MODELUSINGYOUR WATCHCOMPLETE SETTING OF THE WATCH
IS CARRIED OUT IN TWO STEPS IN THE
ORDER GIVEN BELOW
1. Setting the reference time(crown in position 3)
To set the reference time, follow thesteps in the order given:– Unscrew the crown and then pull it
out to the second notch. The seconds
hand is stopped, allowing you to set
the time to the precise second.
– Put the bezel in the neutral position(triangle on the bezel aligned with the12 o’clock marker on the dial).

ROLEX
SERVICE

12– Set the reference time using the24-hour hand (against the graduations
on the bezel) and the minute hand(against the graduations on the dial)by turning the crown in either direction.
Setting the reference time also moves
the conventional hour hand (local time).
For this reason, the reference time must
be set before setting the local time.
Go to step 2

Unscrew and then pull out* Reference time, Geneva, 10.10 a.m.

After every use, carefully screw the crownback down against the case to guarantee thewaterproofness. Return the crown to position 1
and apply light pressure on it while screwing
it down clockwise against the case. The crownshould never be unscrewed underwater.

THE HEART OF THE
GMT-MASTER II MODELUSINGYOUR WATCH

2. Setting the date and the local time(crown in position 2)
To set the date and the local time, follow
the steps in the order given:– Pull the crown out to the first notch.
– Set the date by turning the crown ineither direction. The hour hand moves
in increments of one hour. The datechanges when the hour hand passes
midnight, in either direction, after twocomplete turns around the dial.

ROLEX
SERVICE14– Set the local time by turning the crownin either direction. The hour handmoves in increments of one hour.
Be aware of the difference between
noon and midnight (the date changes
as the hour hand passes midnight).
– Push in and then screw down thecrown.
The local time is identical to the referencetime (24-hour hand) if the wearer iscurrently located in his reference zone.
It can be easily adjusted when travelling.

Push in and then screw down

* Reference time, Geneva, 10.10 a.m.
* Local time, Geneva, 10.10 a.m.

After every use, carefully screw the crownback down against the case to guarantee thewaterproofness. Return the crown to position 1
and apply light pressure on it while screwing
it down clockwise against the case. The crownshould never be unscrewed underwater.

THE HEART OF THE
GMT-MASTER II MODELUSINGYOUR WATCH

ADJUSTING THE LOCAL TIME
(crown in position 2)
When travelling, to adjust local time only(without affecting the 24-hour referencetime display), follow the steps in theorder given:– Unscrew the crown and then pull it out
to the first notch.
– Set the local time by turning the crownin either direction. The hour handmoves in increments of one hour. The
date is linked to local time and changes
automatically when the hour handpasses midnight.

ROLEX
SERVICE

16– Push in and then screw down thecrown.
The 24-hour hand indicates the time in
the reference time zone and allows thewearer to distinguish daytime hours fromnight-time hours.

Unscrew and then pull out* Reference time, Geneva, 10.10 a.m.
* Local time, New York, 4.10 a.m.

After every use, carefully screw the crownback down against the case to guarantee thewaterproofness. Return the crown to position 1
and apply light pressure on it while screwing
it down clockwise against the case. The crownshould never be unscrewed underwater.

THE HEART OF THE
GMT-MASTER II MODELUSINGYOUR WATCHDISPLAYING AN ALTERNATIVETIME ZONE (setting via the bezel only)An alternative time zone can bedisplayed by using the rotatable bezel
and the 24-hour hand (which usuallydisplays the reference time).
To display the alternative time zone,
place the bezel in the neutral position(triangle at 12 o’clock). Then calculate
the number of hours’ difference between
the reference time and the time in thedesired time zone. If that time zone isahead (east of the reference time), turnthe bezel counterclockwise the same
number of hours. If the desired timezone is behind (west of the referencetime), turn the bezel clockwise the same
number of hours. The 24-hour hand readROLEXSERVICE18

against the bezel indicates the time in
the alternative time zone. The minutes
are shown on the dial by the centre
minute hand.
ExampleTo show Tokyo time (+8 hr comparedto Geneva reference time), turn the bezel
8 notches counterclockwise.
To return to the reference time display,turn the bezel in either direction to place
the triangle on the bezel opposite the12 o’clock marker on the dial (neutralposition).

* Local time, New York, 4.10 a.m.
* Time in the alternative time zone, Tokyo, 6.10 p.m.

THE HEART OF THE
GMT-MASTER II MODELUSINGYOUR WATCHROLEXSERVICE20

EASYLINK COMFORTEXTENSION LINK *To ensure optimal comfort when wearing
your watch in any circumstances, Rolex
created the Easylink comfort extension
link, which is available on some models.
Its exclusive design, which was patented,
allows the length of the bracelet tobe adjusted by approximately 5 mm,without the use of tools.

* available on Oyster and Jubilee bracelets

Adjusting from the short position
to the long position

Adjusting from the long position
to the short position

THE HEART OF THE
GMT-MASTER II MODELUSINGYOUR WATCHROLEXSERVICE

22CARING FOR
YOUR ROLEX
Thanks to Rolex expertise, your watch
will require very little day-to-day care.

You can help preserve its lustre bycleaning it occasionally with a microfibre
cloth. You can also wash the case andbracelet from time to time using soapy
water and a soft brush. After wearing
your watch in the sea, it is important torinse it with fresh water to remove any
salt and sand deposits.

23

Before cleaning your watch, always
ensure that the crown is screwed down
properly against the case to guarantee
waterproofness.

THE HEART OF THE
GMT-MASTER II MODELUSINGYOUR WATCHROLEXSERVICE

24

AFTER-SALESSERVICE
Rolex watch servicing ensures thatyour timepiece will continue toperform optimally and meet Rolex’s
stringent requirements in terms ofprecision, reliability and waterproofness
throughout its life.
The timekeeping accuracy of your watch
is largely dependent on high-performance
lubricants specially developed by Rolex
to minimize friction and prevent wearof components. To guarantee continued
accuracy and waterproofness, Rolex
recommends that you periodically return

your watch to an Official Rolex Retailer orService Centre for professional servicing.
When your watch is serviced by a Rolex
watchmaker, the watch is completely
dismantled and all of its components
are cleaned. Each individual component
is closely examined and those thatno longer meet Rolex’s functional andaesthetic specifications are replacedwith genuine Rolex parts.
The movement is carefully lubricatedthen tested to guarantee its timing
accuracy; the case and the metal braceletare meticulously refinished to restore

25

their lustre. Your Rolex then undergoes
a series of rigorous technical tests andchecks to guarantee its waterproofness,power reserve and precision.
After a complete Rolex service, yourwatch is covered by a service guarantee.

THE HEART OF THE
GMT-MASTER II MODELUSINGYOUR WATCHROLEXSERVICEWORLDWIDE SERVICENETWORKThe network of Official Rolex Retailers
and Service Centres covers more than
100 countries around the world anddraws on the expertise of highly skilled
watchmakers, carefully selected andtrained by Rolex.
Official Rolex Retailers can advise you on
all the technical aspects of your watch’sfunctions. Whether your bracelet needs
sizing or it is time for a complete service,highly qualified Rolex watchmakers areon hand worldwide to meet all of yourservice needs.

For a list of Official Rolex Retailers andService Centres, please visit rolex.com.

26

27

ROLEX.COM
We invite you to visit rolex.com,
a privileged place to learn more about
the functions of your Rolex watch
and about the quality, know-how andfundamental values of the brand.
Welcome to the world of Rolex.

Rolex reserves the right to modify the models illustrated in this publication at any time.
© Rolex SA, 3-5-7, rue François-Dussaud, 1211 Geneva 26, Switzerland
IMR-GMT-EN-18 - 2.2020 - Printed in Switzerlandrolex.com