Jaeger-LeCoultre Master Control

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Jaeger-LeCoultre Master Ultra Thin
© Jaeger-LeCoultre

Master Control is a watch model range by Jaeger-LeCoultre.

An unusually hard test

With the presentation of the Master Control series the manufacture Jaeger-LeCoultre took an important step to the high quality of their products, both in terms of their own production and also to unmistakably underline the image of the brand.

Each watch provided with this designation is, prior to delivery to the customer, stringently and extensively checked for 1,000 hours, and this means that it has to undergo checks that are sharper than those laid down in the chronometer certification guidelines and requirements. The label "1000 Hours Control" and the engraving on the back of the models confirm that they have successfully passed all tests for accuracy, resistance to temperature and barometric pressure changes, vibrations and magnetic fields as well as water resistance.

And one most important difference to the chronometer certification by the COSC has to be added: while here only the bare movement is tested for accuracy, the Master test concerns the finished watch which the customer finally receives.

Jaeger-LeCoultre Master Tourbillon
© Jaeger-LeCoultre

Models of the Master Control series

The series Master Compressor

Also the Master Compressor series which focuses on sporty watches is subjected to the inexorable 1000 hours test. For more information see:


Master Control (base model)

Jaeger-LeCoultre Master Control
© Jaeger-LeCoultre

A watch with classic elegance, in the current version fitted with the new self-winding movement JLC 899 with lubrication free ceramic ball bearings and a balance wheel with variable inertia.


Self-winding manufacture movement JLC 899 (before: JLC 889/2), 28,800 A/h
Weight segment in 22ct gold
43 hours power reserve
219 components
32 jewels


18ct red gold or stainless steel
Ø 40 mm, H 8.5 mm
Domed sapphire crystal with anti-glare treatment
Sapphire crystal caseback
Waterproof to 50 m


Silvered, solar grinding, gilded or rhodinated numerals and indexes


Hours, minutes, central seconds, date


Alligator leather strap with double folding clasp or stainless steel bracelet