GRAND LANGE 1 “Luminous”

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GRAND LANGE 1 “Luminous”

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Reference:
115.028

Movement:

Lange manufacture calibre L901.2, manually wound, crafted to the highest Lange quality standards, decorated and assembled by hand
precision-adjusted in five positions
twin mainspring barrel
plates and bridges made of untreated German silver
balance cock engraved by hand

Number of parts:

365

Jewels:

53

Screwed gold chatons:

9

Balance:

Lever escapement

Escapement:

Shock-resistant glucydur screw balance, Nivarox balance spring, frequency 21,600 semi-oscillations per hour, whiplash precision index adjuster with patented beat adjustment mechanism

Power reserve:

More than 72 hours when fully wound

Functions:

Time indicated in hours, minutes, small seconds with stop seconds, patented outsize date, power-reserve indicator