Jaeger-leCoultre Master Calendar User Manual

Introduction
We congratulate you on the purchase of your Jaeger-
LeCoultre watch and thank you for your confidence.
The date displayed by a large central hand, symmetrical
apertures showing the day and the month, moon phases and
power-reserve : a true purist’s expression of elegance and
style, the Master Calendar sets an evocative scene for the
play of time.
We invite you to consult the operating instructions and we
wish you great pleasure with your Jaeger-LeCoultre timepiece.
Accuracy
Mechanical models with manual or automatic
winding
The precision of the mechanical models is determined by the
balance. The latter performs 21,600 or 28,800 vibrations per
hour depending on the model (see technical characteristics).
Despite all the care that the Jaeger-LeCoultre
masterwatchmakers have lavished on making and assembling
your watch, its accuracy is subject to the influence of gravity,
magnetic fields, shocks, as well as ageing of the oils. This
accuracy is measured by its rate regularity in various positions.
The nature of your temperament and of your daily activities
may cause slight variations in timekeeping. If you were to notice
that your watch is running slow or fast, we advise you to take
it to an approved Jaeger-LeCoultre retailer, who will make any
necessary adjustments.
Quartz models
The quartz models are accurate to within 2 to 3 minutes
per year.
Jaeger-LeCoultre quartz watches contain a battery
and electronic components. When performing
maintenance, your official Jaeger-LeCoultre Service
Centre or your authorised Jaeger-LeCoultre retailer
will take charge of their recovery and disposal in accordance
with the standards in force.
Water resistance
Jaeger-LeCoultre Master Control watches are water-resistant
to 5 Atm. This property is identifiable by the
symbol
engraved on the case-back. This means that your timepiece
has been tested at an immersion pressure corresponding to
50 metres.
You can use your watch while swimming or diving from the
edge, but not from a diving board. It should not be used either
for undersea diving or for sports where there are significant
risks of hard knocks, such as windsurfing and waterskiing.
Please also note that leather straps are not suitable for aquatic
activities.
It is essential to have the water resistance of your watch
regularly checked by an approved Jaeger-LeCoultre retailer,
and definitely before a period of intensive use.
Master Calendar
1
2
3
5
4
7
12
8
11
10
9
6
1 Power reserve hand
2 Minute hand
3 Corrector A
4 Crown
5 Month
6 Corrector B
7 Moon phases
8 Date
9 Corrector C
10 Small seconds hand
11 Day
12 Hour hand
Master Calendar
- English 1/4

Jaeger-leCoultre Master Calendar Specifications

General

Waterproof	Yes
Chronograph	No
Chronometer	-
Power reserve	40 h
Mechanism type	Mechanical (auto winding)
Movement model	866
Watch dial type	Analog dial
Movement manufacturer	Jaeger-LeCoultre
Gender	Male
Case shape	Round
Band material	Leather
Product design	Casual
Watch marker style	Arabic numerals/Non numeral
Watch case material	Stainless steel

Summary

Master Calendar Watch Features

Introduction to the Master Calendar

Welcome and overview of the Jaeger-LeCoultre Master Calendar watch, highlighting its design and features.

Accuracy of Jaeger-LeCoultre Watches

Discusses the precision of mechanical and quartz models and factors influencing timekeeping accuracy.

Quartz Model Specifications

Details the accuracy of quartz models and the handling of electronic components for maintenance.

Water Resistance Guidelines

Explains the water resistance of Master Control watches and recommendations for use and maintenance.

The 1000 Hours Control Test and Operation

1000 Hours Control Test Explained

Details the rigorous 1000 Hours Control test programme certifying watch quality and performance.

Technical Characteristics of Calibre 924

Outlines key technical specifications including movement type, vibrations per hour, and power reserve.

Watch Operation and Settings

Instructions on starting the watch, setting the time, date, month, and moon phases using correctors.

Warranty and Customer Service

International Guarantee Terms

Conditions of the international guarantee for Jaeger-LeCoultre products, excluding USA and Canada.

Limited Warranty for USA and Canada

Details the specific limited warranty terms for watches sold in the United States of America and Canada.

Jaeger-LeCoultre Customer Service

Information on obtaining customer service, maintenance, and repair from authorized retailers or service centres.