Jaeger-leCoultre 381 Manual de usuario

ENGLISH

Table of contents

Introduction 21

Accuracy and precautions for use 21

Water resistance 22

“1000 Hours Control” test 24

Technical specifications 25

Movement 26

Use 28

International Guarantee 32

Limited Warranty 36

(United States of America

and Canada)

1Minute hand

2Hour hand

3Crown A

4Power reserve of the functions

5Jumping seconds hand

6Power reserve of the regulator

7Seconds hand

8Date hand

9Moon phase hand

10 Moon phase aperture

for the northern hemisphere

11 Date correction push-piece

12 Moon phase corrector in the horn gap

Introduction

We would like to thank you for the confidence

you have placed in Jaeger-LeCoultre. Our

Maison has applied all its expertise and passion

to the creation of this model.

We invite you to consult the operating

instructions and hope your Jaeger-LeCoultre

timepiece brings you great joy.

Accuracy and precautions for use

MANUALLY WOUND OR AUTOMATIC

MECHANICAL WATCHES

The accuracy of watch models with mechanical

movements is determined by the balance

wheel. This oscillates at a rate of 21,600

vibrations per hour. Despite all the care that the

master watchmakers of the Jaeger-LeCoultre

Manufacture have lavished on building and

assembling your watch, its accuracy is subject

to the influence of gravity, magnetic fields,

accidental impacts, and the ageing of oils.

The accuracy of a watch is measured by its

1Minute hand

2Hour hand

3Crown A

4Power reserve of the functions

5Jumping seconds hand

6Power reserve of the regulator

7Seconds hand

8Date hand

9Moon phase hand

10 Moon phase aperture

for the northern hemisphere

11 Date correction push-piece

12 Moon phase corrector in the horn gap

ENGLISH

regularity of rate in various positions.

Your individual activities could be the cause

of slight irregularities in the working of your

timepiece. If you observe a discrepancy in the

way your watch runs, we advise you to entrust it

to an authorised Jaeger-LeCoultre retailer who

will make the necessary adjustments. Watches

with mechanical movements must not be used

for sports involving significant risk of impact or

abrupt actions, such as golf or tennis.

Water resistance

Your Jaeger-LeCoultre watch is water resistant

up to 5 bar. Its water resistance can be identified

by the symbol engraved on the case-back.

This means that your model has been tested at

an overpressure of 5 bar, corresponding to an

immersion pressure of 50 metres (1 bar = ±10

metres).

In accordance with the ISO 22810/NIHS 92-20

standard, in order to guarantee the durability

of the watch’s characteristics over time, and

as water resistance may be affected by certain

activities, it is recommended that the user:

-have the watch’s water resistance checked

by an authorised Jaeger-LeCoultre retailer at

least once every two years. It is essential to

have such a check carried out each time your

watch is opened, and before any period during

which it is liable to undergo prolonged and/or

regular immersions.

-check when making the purchase that the

bracelet is suitable for the intended use.

-avoid subjecting the watch to excessively

abrupt temperature changes.

-protect the watch from being dropped or from

suffering other accidental impacts, and have

the water resistance checked after any violent

impact.

-avoid the use of the controls, push-piece,

or time-setting crown while under water, or

outside the water, if the watch is not yet dry

after immersion.

-restore the time-setting crown and the push-

piece to their normal positions, or where

applicable, close the compression keys after

every manipulation.

ENGLISH

-rinse the watch with fresh water after use in

sea water.

You may use your watch during short swims and

when jumping in from the edge of a swimming

pool, but not from a diving board. It must not

be used for scuba diving or for sports involving

significant risk of impact, such as windsurfing

or waterskiing. Also, note that leather straps are

not suited for aquatic activities.

“1000 Hours Control” test

Jaeger-LeCoultre submits all its watches to

its stringent “1000 Hours Control”, a battery

of comprehensive and rigorous internal tests

lasting a full 1000 hours.

The “1000 Hours Control” seal or legend

placed or engraved on the back of your watch

certifies that the timepiece has successfully

passed all the tests relating to regularity of

rate, temperature, atmospheric pressure, and

resistance to shocks and magnetic fields, as

well as water-resistance trials. Thus, your watch

is capable of withstanding the daily stresses

and strains that await it. The criteria of the

“1000 Hours Control” programme considerably

exceed the standards of official timing tests,

which deal only with part of the movement.

Jaeger-LeCoultre tests not only the movement

prior to being cased up in the watch, but also

the watch once it has been assembled.

Technical specications

-Manually wound mechanical movement,

Jaeger-LeCoultre Calibre 381 Dual-Wing

-21,600 vibrations/hour.

-Power reserve of the regulator: approximately

50 hours.

-Power reserve of the functions: approximately

50 hours.

ENGLISH

Movement

Jaeger-LeCoultre Calibre 381.

Important note regarding the power reserves

of the Calibre 381 Dual-Wing.

The Dual-Wing movement of the Duomètre

Quantième Lunaire watch model features two

barrels. The first barrel provides the watch’s

regulator (regulating organ) with 50 hours

of power reserve. The second barrel, which

is independent from the first, provides all the

watch’s functions with 50 hours of power

reserve. The functions, thus, do not cause any

loss of energy or isochronism in the escapement.

The regulator’s power reserve is indicated

by the blue triangle positioned between 7

and 8 o'clock. The functions’ power reserve

is indicated by the blue triangle positioned

between 4 and 5 o’clock.

In both cases, the power reserve is at its

maximum when the triangle is positioned

opposite the “50” symbol. As energy is

consumed, the triangle will gradually point

towards the “0” symbol. When the triangle is

opposite the “0” symbol (after approximately

50 hours for both the escapement and the

functions), this indicates that the power reserve

has been exhausted. This is the last chance to

wind up the watch without losing the settings.

Both barrels can be wound using Crown A, in

position 1.

To wind the escapement barrel (and conse-

quently its power reserve), turn the crown

clockwise.

To wind the functions barrel (and consequently

its power reserve), turn the crown anti-

clockwise.

Important:

Although the two power reserves are

independent, it is vital that both are wound

ENGLISH

before the timepiece can be used.

If one of the power reserves is depleted, the

movement will stop (no damage will be caused

to the movement). It will thus be necessary to

wind the two power reserves according to the

instructions to restart the calibre.

IDENTIFYING THE SECONDS HANDS

The Duomètre Quantième Lunaire watch

features two seconds displays. The first is the

central hand, while the second is the jumping

seconds hand at 6 o’clock, which gives an

indication to 1/6th of a second.

Use

STARTING THE WATCH

Crown A in position 1.

The watch is started by turning the crown

clockwise to wind the escapement power

reserve and anti-clockwise to wind the

functions barrel. The watch is fully wound when

the two power reserve hands have reached the

“50” symbol. There is no stop to tell you that

the movement has been fully wound, as excess

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