Using a variable-inertia balance ensures stability when setting a Jaeger-LeCoultre watch. To ensure a better impact resistance and outstanding reliability, the balance-spring is laser-welded to the stud and collet.
Using a variable-inertia balance ensures stability when setting a Jaeger-LeCoultre watch. To ensure a better impact resistance and outstanding reliability, the balance-spring is laser-welded to the stud and collet.
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