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> Saxonia > 130.039 - Lange 31 Limited Edition
Brand
A. Lange & Sohne
Reference Number
130.039 - Lange 31 Limited Edition
Mechanism
Key-operated winding
Collection
Saxonia
Case Material
18k White Gold
Function
Date, Seconds Hand & Power Reserve Indicator
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The LANGE 31 is the first mechanical wristwatch with a power reserve of 31 days. Additionally, it features a patented constant-force escapement, which makes it possible for the first time to actually harness such an extreme power reserve. This mechanism assures high rate stability and thus consistent rate accuracy for an entire month.

Reference: 130.039
Case: White gold
Dial: Solid silver, grey
Hands: rhodiumed gold
Limit: 100 watches

Lange manufacture calibre: L034.1

Number of movement parts / jewels: 406 / 62

Screwed gold chatons: 3

Escapement: Lever escapement

Oscillator: Shock-resistant screw balance, Nivarox® balance spring* with a frequency of 21,600 semi-oscillations per hour; whiplash precision index adjuster with patented constant-force escapement

Power reserve: 31 days when fully wound

Functions: Hours and minutes; subsidiary-seconds dial; outsize date; power-reserve indicator; stop-seconds mechanism

Case measures: Diameter: 45.9 millimetres; height: 15.9 millimetres

Movement measures: Diameter: 37.3 millimetres; height: 9.6 millimetres

Case versions: Platinum, pink gold