iwc IW3921 User manual

www.iwc.com
OPERATING INSTRUCTIONS
使用说明
使用說明
取扱説明書
PETUNJUK PENGGUNAAN
ИНСТРУКЦИЯ ПО ЭКСПЛУАТАЦИИ
КЕРІВНИЦТВО З ВИКОРИСТАННЯ
DA VINCI PERPETUAL
CALENDAR CHRONOGRAPH
REF. 3921
REFERENCE 3921
IWE07128/01.17/1.0

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
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OPERATING INSTRUCTIONS
English
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使用说明
简体中文
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使用說明
繁體中文
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取扱説明書
日本語
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PETUNJUK PENGGUNAAN
Bahasa Indonesia
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ИНСТРУКЦИЯ ПО ЭКСПЛУАТАЦИИ
Русский
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КЕРІВНИЦТВО З ВИКОРИСТАННЯ
Українська

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
Welcome to the small circle of
individuals who, if we are to be abso-
lutely precise, demand slightly more
of a watch than absolute precision.
Appreciation of a watch is more than
mere appreciation of the correct time.
It is enthusiasm for an ingenious idea.
For the interplay between precision
and imagination. Between time and
timelessness. Between boundaries
and infinity. Between laws to which
the entire world is subject, and taste,
which cannot be dictated to anyone.
That is why, since 1868, we have been
devoting rather more of our time to
watches that must not only run with
absolute precision but which also, with

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
every passing second, exert a fas-
cination with the great achievements
of master craftsmanship: a fascination
with new inventions of a technical,
material or formal nature, even if they
are concealed in minute details that are
perhaps not even visible. You are now
the owner of a beautiful new example
of this IWC tradition. We would like to
congratulate you on your choice and
send you our best wishes for the time
you will spend with your watch, which
perhaps cannot be described with any
greater accuracy than it is here.
IWC MANAGEMENT

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
THE TECHNICAL
REFINEMENTS OF THE
DA VINCI PERPETUAL
CALENDAR CHRONOGRAPH
Your IWC watch shows you the time
in hours, minutes and seconds, the
moon phase, the day, the date, the
month and the year in four digits, as
well as the remaining power reserve.
The mechanical movement with auto-
matic winding has a power reserve
of approximately 68 hours when fully
wound. Your Da Vinci Perpetual Cal-
endar Chronograph is protected by an
arched-edge sapphire glass of hard-
ness grade 9 on Mohs’ scale. Your

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
watch is water-resistant 3 bar. The
engraved rotor made of 18-carat gold
winds the watch in both directions of
rotation via IWC’s double-pawl wind-
ing. In addition to the uniqueness of
its functions, it is the display’s legibil-
ity and the ease with which it can be
used that distinguishes this watch from
all other complicated timepieces. To
ensure that this extraordinary watch
continues to perform faultlessly in the
future, it is essential to observe a few
important operating instructions.

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
8
2
5
4
3
14
12
11
6
7
9
10
13
1
1Hour hand
2Minute hand
3Chronograph
seconds hand
4Small seconds hand
5Date display
6Day display
7Month display
Year display 8
Moon phase display 9
Minute counter 10
Hour counter 1 1
Crown 12
Start/stop 13
push-button
Reset/flyback 14
push-button

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
FUNCTIONS OF
THE CROWN
0 1 2
0—Normal position
1—Setting the calendar
2—Time setting

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
NORMAL POSITION
With the crown in the normal position
(0), you can also wind the automatic
movement by hand. A few revolu-
tions of the crown are enough to start
the movement. However, it is recom-
mended to wind the watch by turn-
ing the crown through approximately
20 revolutions, as this will ensure opti-
mal precision. The crown must always
be in position 0 when you are wearing
your watch.

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
READING THE
CHRONOGRAPH
Chronograph seconds hand: The
scale for the central chronograph sec-
onds hand runs around the edge of
the dial.
Minute and hour counters: The sub-
dial at 12 o’clock has two hands, which
run continuously and show the elapsed
time on a 12-hour and a 60-minute
scale. The hour and minute counters
can be read like a standard analogue
time display. In other words, one revo-
lution of the minute counter is equal to
60 minutes, and one revolution of the
hour counter is equal to 12 hours.

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
USING THE CHRONOGRAPH
Start: To start the chronograph, press
the start/stop push-button.
Flyback: You can start recording a
new time immediately, even when
the chronograph is running. Simply
depress the reset/flyback push-but-
ton fully, as far as it will go. All three
chronograph hands are reset to zero,
and a new measurement is started as
soon as the push-button is released.
Stop: To stop the running chronograph,
press the start/stop push-button.
Reset: Depress the reset/flyback push-
button fully, as far as it will go. This
will reset all the chronograph hands
to zero.

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
Aggregate timing: You can add stop
times together by pressing the start/
stop push-button again after the first
measurement instead of the reset/fly-
back push-button.
SETTING THE CALENDAR
Pull out the crown to position 1. In
this position, you can use the direct-
advance function to move the calendar
forward one step at a time by turning
the crown slowly to the right. The cal-
endar must not be adjusted between
8 p.m. and 2 a.m.
Please note:
– Turning the crown too quickly when

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
setting the calendar might result in a
faulty advance and the desynchron-
ization of the individual calendar dis -
plays (e.g. date, day, moon phase).
In such a case, the movement needs
to be reset by an IWC watchmaker.
– You must not move the calendar
beyond the correct date. The com-
plicated movement is mechanically
programmed and cannot be moved
back in time without making a pro-
fessional adjustment to the move-
ment. However, if you do move the
date forward beyond the correct
date, you have two options: you can
either pull out the crown to position
2 to stop the movement until the cal-
endar setting matches the correct
date once again. This makes sense

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
if the date has been set only a few
days ahead. Or you can take your
watch to your watchmaker, who will
be able to adjust the movement to
reset the calendar. This is recom-
mended in the event of larger mal-
adjustments.
TIME SETTING
Pull out the crown to position 2. This
will stop the movement. To set the time
accurately to the second, it is best to
stop the movement as the seconds
hand passes 60. Now move the minute
hand a few minute strokes beyond
the time to be set. Then position the
minute hand by moving it gently back-

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
wards until it is exactly above the cor-
rect minute stroke. This ensures that
the minute hand begins to move imme-
diately when you restart the move-
ment. To start the seconds hand, push
in the crown to position0. Moving the
hands forward past midnight causes
the calendar to switch to the follow-
ing day. When advancing the calendar,
you can follow and observe the auto-
matic switching sequence.
Important:
– Under no circumstances must the
hands be turned back between 8
p.m. and 2 a.m. as this will result in
maladjustment of the calendar.
– The hands must never be turned
anticlockwise beyond 2 a.m.

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
– The crown must be pushed back
into the normal position before wear-
ing the watch to avoid unintentional
adjustment of the calendar.
SETTING YOUR WATCH
CORRECTLY
To set your watch correctly, proceed
as follows:
– Wind the movement (approximately
20 revolutions of the crown).
– Pull out the crown to position 2 and
turn the hands forward to approxi-
mately 4.40 a.m. This ensures that
the calendar mechanism is not in
the middle of the automatic switch-
ing phase and that you can also see

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
the calendar displays easily.
– Push the crown to position 0 and pull
it back to position 1.
– Slowly turn the crown to the right.
The calendar now advances in steps.
Set the display to yesterday’s date,
keeping an eye on the month and
the year.
– Pull out the crown to position 2. This
will stop the movement. To set the
time accurately to the second, it is
best to stop the movement as the
seconds hand passes 60.
– Turn the hands forward until the date
display changes to today’s date. The
hands will now be positioned between
12 midnight and 1 a.m.
– Now turn the hands forward to the
current time. If you are setting the

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DA VINCI PERPETUAL CALENDAR CHRONOGRAPH
watch in the afternoon, you must
turn the hands past 12 noon again.
Now move the minute hand a few
minute strokes beyond the time to
be set. Then position the minute
hand by moving it gently backwards
until it is exactly above the correct
minute stroke. This ensures that the
minute hand begins to move imme-
diately when you restart the move-
ment.
– Push the crown back to position 0
to start the movement.