GRAND LANGE 1 MOON PHASE “Lumen”

Movement

Lange manufacture calibre L095.4, manually wound, crafted to the most exacting Lange quality standards, decorated and assembled by hand; precision-adjusted in five positions; plates and bridges made of untreated German silver; balance cock engraved by hand

Movement parts

446

Jewels

45

Screwed gold chatons

7

Escapement

Lever escapement

Oscillator

Shock-resistant screw balance; balance spring manufactured in-house with a frequency of 21,600 semi-oscillations per hour, precision beat adjustment system with lateral setscrew and whiplash spring

Power reserve

72 hours when fully wound

Functions

Time indicated in hours, minutes and subsidiary seconds with stop seconds; power-reserve indicator; luminous outsize date; moon-phase display

Operating elements

Crown for winding the watch and setting the time, one button for quick outsize date corrections, recessed push piece for correcting the moon-phase display

Case dimensions

Diameter: 41.0 millimetres; height: 9.5 millimetres

Movement dimensions

Diameter: 34.1 millimetres; height: 4.7 millimetres

Crystal and back

Sapphire crystal (Mohs hardness 9)

Case

Platinum

Dial

Basic dial (outer ring, hours, minutes, subsidiary seconds) in solid silver, black-oxidised; semi-transparent sapphire crystal; luminous details: outsize date, Roman numerals and markers for the time, power-reserve indicator and moon-phase display

Hands

Rhodiumed gold, luminous

Strap

Hand-stitched alligator leather strap, black

Buckle

Platinum deployant buckle

Limited edition
200 watches