Jaeger-leCoultre Master Control User Manual
Introduction
We congratulate you on the purchase of your
Jaeger-LeCoultre watch and thank you for your confi dence.
With its 1.85 mm thick movement, the Master Ultra Thin
eloquently testifi es that even the greatest technique and
sophistication may be easily accommodated within diminutive
dimensions. The watch features a sapphire case-back for those
eager to explore the mysteries of this minimalist grand classic.
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 specifications
applicable to each model).
Despite all the care that the Jaeger-LeCoultre master-
watchmakers 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. Watch
accuracy is measured by rate regularity in a variety of 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 bar/atm. The water-resistance of your watch can be
identified by the
symbol engraved on the case-back.
This means that you can use your watch for short swims, and
when diving from the poolside, but not from a diving board. It
must not be used either for scuba 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 also essential to have the water resistance of your watch
regularly checked by an authorised Jaeger-LeCoultre retailer
at least once every 2 years, and definitely before any period
in which it will undergo prolonged and / or regular immersion.
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1 Hour hand
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