Since 1833, the quest for precision and reliability has been a constant driving force behind the progress of the Manufacture Jaeger-LeCoultre.

In 1992 the Grande Maison in the Vallée de Joux created this classically inspired line named after a merciless set of tests, the 1000 Hours Control, introduced that same year in order to guarantee the reliability, the sturdiness and the precision of its timepieces, even in the most extreme conditions.

The rating precision of the Master control novelties' is tested in six positions, at rest and in motion, while the prophylactic administration of calculated shocks proves their sturdiness, and their water resistance is verified under 5-bar pressure. After 1000 hours of constant controls, each watch is finally authorised to join the proud cohort of representatives of the Master Control line, and to set off towards the encounter with its future owner.

This new generation of watches feature a design distinguished by the refinement of pure classical lines inspired by the 1930s pocket-watches.

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