Iwc 3723 User manual

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www.iwc.com

AQUATIMER SPLIT MINUTE CHRONOGRAPH

REF. 3723

OPERATING INSTRUCTIONS

REF. 3723

IWA20853/02.09/0.1

Operating instructions

English

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Welcome to the small ci cle of individuals who, if we a e to be

absolutely p ecise, demand slightly mo e of a watch than absolute p ecision.

App eciation of a watch is mo e than me e app eciation of the co ect time.

It is enthusiasm fo an ingenious idea. Fo the inte play between p ecision

and imagination. Between time and timelessness. Between bounda ies and

infinity. Between laws to which the enti e wo ld is subject, and taste, which

cannot be dictated to anyone. That is why, since 1868, we have been devoting

athe mo e of ou time to watches that must not only un with absolute

p ecision but which also, with eve y passing second, exe t a fascination with

the g eat achievements of maste c aftsmanship: a fascination with new

inventions of a technical, mate ial o fo mal natu e, even if they a e concealed

in minute details that a e pe haps not even visible. You a e now the owne of

a beautiful new example of this IWC t adition. We would like to cong atulate

you on you choice and send you ou best wishes fo the time you will spend

with you watch, which pe haps cannot be desc ibed with any g eate accu acy

than it is he e.

IWC Management

Technical refinements of the

Aquatimer Split Minute Chronograph

Your IWC watch shows you the time in hours, minutes and seconds as well

as the date. With the integral chronograph, you can measure any period

up to 12 hours in seconds, minutes and hours. The duration of a dive can

be read on the bezel inside the case, which can be adjusted in an anti-

clockwise direction by turning the reset button. You can use the Split

inute function to mark the start of a decompression stop. The self-

winding mechanical movement has 30 jewels (synthetic rubies) and a power

reserve of at least 44 hours when fully wound. Your Aquatimer Split inute

Chronograph is shockproof, water-resistant 12 bar and is protected by a

sapphire glass of hardness grade 9 on oh’s scale. To ensure that this

extra ordinary watch continues to perform its tasks in the future, it is

absolutely essential to observe a few important operating notes.

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Key to the Aquatimer Split Minute Chronograph

1Hour hand

2inute hand

3Seconds hand

4Date indicator

5Screw-in crown

6Split inute hand

7Rocker switch

Split inute function

8Seconds stop hand

9inutes counter

10 Hours counter

11 Start-stop button

12 Reset button

13 Rotating inner bezel

with time graduation

Functions of the crown

XNormal position (screwed in)

0Winding position

1Date setting

2Time setting

Normal position

This watch has a screw-in crown. The screw-in connection (normal position,

position X) prevents unintentional adjustment of the time or the date, and the

watch case has double protection against penetrating water. To release the

secure crown, unscrew it by rotating it to the left, where it automatically

assumes position 0, the winding position. By depressing the crown in position X

and rotating it to the right at the same time, it is screwed down firmly again

and secured.

Winding position

In the winding position (position 0), you can also wind the automatic move-

ment by hand. The movement will start after only a few revolutions of the

crown. However, it is better to wind the movement fully with about 30 revolu-

tions of the crown, as maximum accuracy and a power reserve of about

44 hours will then be assured, even after taking off the watch.

X012

6 | 7

Setting the date

If a month has fewer than 31 days, you must set the date by hand to the first

day of the following month. To do this, release the screw-in crown and pull it

to position 1. You can now change the date by rotating the crown to the right

(quick setting).

Setting the time

Pull the crown to position 2. This will stop the movement. To ensure that the

set time is accurate to the second, it is best to stop the movement as the

seconds hand reaches 60. You can now position the minute hand exactly on

the minute line. To start the seconds hand, push the crown back to position 0.

When setting the time, please be aware that the date change always

takes place at midnight (24.00). If this change has already taken place at

12.00 (noon), you must move the hands forwards by 12 hours.

Setting your watch correctly

Set your watch correctly as follows:

•Release the crown by rotating it to the left.

•Wind the movement until it is fully wound (about 30 revolutions of

the crown).

•Pull the crown to position 1.

•Rotating the crown to the right causes the date indicator to change in

steps. Set yesterday’s date.

•Pull the crown to position 2, and this will stop the movement.

•Turn the hands forwards until the date indicator changes to today’s date.

The hands will now be positioned between 0.00 and 1.00 in the morning.

•Now set the precise time by turning the hands forwards; in the afternoon,

the hands must be turned past 12.00 (noon) once again.

•Push the crown back to position 0 to start the watch movement.

•Now push the crown to position X and secure it by rotating it to the right

at the same time.

Important: Although the watch is water-resistant in positions 0, 1 and 2,

the crown must nevertheless always be screwed down again for normal use

(position X).

Reading the time in the dark

The dial, the hour and minute hands as well as the marking on the rotating

inner bezel of your watch are provided with luminous elements which

permit the time to be read without problem, even in total darkness. The

luminous point at 12.00 serves as a reference point.