In 2017, after 15 years of its launch, the iconic LANGE 1 MOON PHASE timepiece from A. Lange & Söhne will be endowed with a new movement. This new upgraded model will be unveiled at the upcoming SIHH exhibition in Geneva. The new version takes a new and particularly realistic approach by combining the moon-phase display with a day/night indicator. The moon-phase display of this watch tracks the lunar cycle – with an average duration of 29 days, 12 hours, 44 minutes and 3 seconds – so accurately that it takes 122.6 years for the display to deviate from the true synodic period by just one day.
Model: LANGE 1 MOON PHASE
Lange manufacture calibre L121.3, manually wound, crafted to the most exacting Lange quality standards, deco-rated and assembled by hand; precision-adjusted in five positions; plates and bridges made of untreated German sil-ver; balance cock engraved by hand
Diameter: 30.6 millimetres; height: 6.3 millimetres
Movement parts: 438
Screwed gold chatons: 8
Escapement: Lever escapement
Oscillator: Shock-resistant cam-poised balance; balance spring manu-factured in-house, frequency 21,600 semi-oscillations per hour, precision beat adjustment system with lateral set-screw and whiplash spring
Power reserve: 72 hours when fully wound
Time indicated in hours, minutes, and subsidiary seconds with stop seconds; power-reserve indicator; Lange outsize date, moon-phase display with integrated day/night indicator
Crown for winding the watch and setting the time; button for quick outsize date corrections; recessed push piece for correcting the moon-phase display
Diameter: 38.5 millimetres
Height: 10.2 millimetres
Crystal and back: Sapphire crystal (Mohs hardness 9)
192.029: White gold case, Solid silver, black dial, Rhodiumed gold hands, luminous appliqués, Hand-stitched alligator leather black strap, White-gold prong buckle
192.032: Pink gold case, Solid silver, argenté dial, Pink gold hands, luminous appliqués, Hand-stitched alligator leather red brown, Pink-gold prong buckle
192.025: Platinum case, Solid silver, rhodié dial, Rhodiumed gold hands, luminous appliqués, Hand-stitched alligator leather black strap, Platinum prong buckle
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