====== A. Lange & Söhne Zeitwerk Honeygold “Lumen” ======
{{wst>image_cr|A. Lange & Söhne|Zeitwerk Honeygold Lumen|Zeitwerk Honeygold "Lumen"}}
{{wst>image_cr|A. Lange & Söhne|Zeitwerk Honeygold Lumen back|Zeitwerk Honeygold "Lumen", Rückseite}}

The **Zeitwerk Honeygold "Lumen"** is a wristwatch by [[A. Lange & Söhne]].

Presented in [[2021]], the name of this model in the Zeitwerk series refers to the Lange-exclusive case material [[Honeygold]], which is a warmer gold hue, and to the translucent coating of the dial, which allows the luminous numerals that are not exposed in the aperture to absorb enough UV light, and thus light energy needed to make them glow in the dark. The digital display can therefore also be read immediately after each switching operation. At night, the numerals, which are only dimly visible during the day, allow the watch to glow.

The watch is powered by the hand-wound manufacture caliber [[Lange L043|L043.9]], whose mechanism simultaneously advances all three dials by one counter on the hour. The patented [[constant-force]] escapement handles two important functions: on the one hand, it generates the impulse for the abrupt advance of the time display. Second, it drives the balance over the entire running time with almost constant energy.

<WRAP ud ud_mod>
**Reference:**
  * 142.055 [[Honeygold]]

**Movement:**
  * [[Manual winding]] [[manufacture movement]] [[[Lange L043|Lange L043.9]], 18,000 A/h
  * 61 [[jewels]], including 2 in screwed gold [[chaton]]s
  * Minute jump via [[constant-force]] escapement
  * [[Three-quarter plate]] in untreated [[nickel silver]]
  * Shock-resistant [[Glucydur]] [[cam-poised balance]]  
  * [[Balance spring]] from in-house production with patented balance spring clamp
  * Precision beat-adjustment system with lateral setscrew and whiplash spring
  * [[Double barrel]]
  * [[Balance cock]] and [[escapement wheel]] cock engraved by hand
  * 462 components
  * Power reserve 72 hours

**Case:**
  * [[Honeygold]]
  * Ø 41.9 mm, H 12.6 mm
  * [[Sapphire crystal]] with [[anti-glare treatment]]
  * [[Sapphire crystal]] caseback

**Dial:**
  * Sapphire crystal, coated; [[luminous]] numerals coated with white [[Superluminova]]
  * Hands Honeygold
  * Time bridge [[nickel silver]], black [[rhodinated]]

**Functions:**
  * Hours, minutes with [[jumping]] numerals
  * [[Small seconds]] with [[hacking seconds]]
  * [[Power reserve indicator]]

**Bracelet:**
  * Dark brown hand-sewn crocodile leather strap with [[tang-type buckle]]

**Limited edition:**
  * 200 pieces
</WRAP>

{{tag>Watch_models A._Lange_&_Söhne_models A._Lange_&_Söhne_Zeitwerk_models}}