GRAND LANGE 1 “Luminous”

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 Operating elements: Crown for winding the watch and setting the time, date correction push-piece Case: 18 Karat white gold; diameter: 41.9 mm, height: 11.0 mm