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GMT, Worldtimer, GMT Chronograph
Operating instructions
2
Setting the time and the date:
Pull the crown out to position 3. By turning the crown, move the
minutes hand and the 24-hour universal time disc forwards until they
indicate the UTC (Coordinated Universal Time) time. The display of
the 24-hour universal time must be set in such a way that the time
corresponding to the different time zones (represented by cities or
geographic areas on the dial) is correct.
Push the crown back to position 1 to start the movement.
Pull the crown out to position 2. By turning the crown, move the hour
hand forwards or backwards in one-hour increments to set the date,
then position this hand on the time that corresponds to the time zone
selected. As the date will change at midnight, make sure you set the
hour hand in the correct half of the day!
For cities/geographic areas with summer time, add an additional hour
to the hour indicated on the watch when summer time is in effect.
Calibres 3603, 9605 and 9615 - chronograph functions:
•
Pusher A:
start – stop, start – stop, etc.
Timekeeping with a resolution of 1/8 of a second for up to 12 hours.
•
Pusher B:
reset (after a stop).
Note:
the chronograph function must always be stopped before the
zero resetting function is used. Never push the chronograph’s two
pushers (A and B) simultaneously (calibre 3603).
Chronometer/Master Chronometer
Specific sections/general information
3
OMEGA
watches with a chronometer-certified movement
A chronometer is a high-precision watch whose movement has been
individually tested, for 15 days in 5 positions and at 3 temperatures, by
a neutral official body in accordance with the ISO 3159 (NIHS 95-11)
Standard. Each chronometer is unique, and identified by a number
engraved on its movement.
NIHS: Swiss Watchmaking Industry Standard
Master Chronometer
OMEGA
certified watches
In addition to the chronometer movement certification, Master
Chronometer watches are individually tested at
OMEGA
for 10 days
before they are delivered to the end customer. Test trials, based
on a simulation of wear of the finished watch, aim to ensure the
precision, resistance to magnetic fields (1.5 tesla / 15,000 gauss),
power reserve and water-resistance of Master Chronometer watches.
The process, measurement equipment, and results obtained for each
watch are certified by METAS.
METAS: Federal Institute of Metrology (Switzerland)
15,000 gauss
Specific sections/general information
3
Your
OMEGA
watch is designed to resist a magnetic field of
15,000 gauss. This is an intensity higher than any to which it will be
exposed in everyday use (for example, the magnet in a handbag clasp
may attain 2,000 gauss). Not only will your watch not stop in the pre-
sence of a magnetic field, it will not even suffer any loss of accuracy
after being exposed to such a field.
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