====== A. Lange & Söhne Lange 1 Perpetual Calendar ======

{{wst>image_cr|A. Lange & Söhne|Lange 1 Ewiger Kalender Rotgold|Lange 1 Perpetual Calendar (red gold)}}
{{wst>image_cr|A. Lange & Söhne|Lange 1 Ewiger Kalender|Lange 1 Perpetual Calendar (white gold)}}

{{wst>image_cr|Lange|L021.3}}

**Lange 1 perpetual calendar** is a luxury watch by [[A. Lange & Söhne]].

In this [[2021]] presented model in the series Lange 1 with decentralized dial, the month display was implemented with a ring at the periphery of the dial, which advances once a month. In addition to the Lange [[big date]], there is a retrograde weekday display and a leap year display. These displays are [[jumping]] realized, which makes the readability much easier.

Furthermore, the watch has a moon phase display with an integrated day/night indicator.

It is available in red gold with a solid silver dial in gray and in a white gold edition limited to 150 pieces with a solid red gold dial. Color-coordinated hands and appliqués in red gold and rhodium-plated gold respectively complete the design. In the red gold version, the hands are additionally luminescent, as are the square hour indices of the minute track.

The automatic manufacture caliber [[Lange L021|L021.3]] is based on the caliber L021.1 of the [[A. Lange & Söhne Lange 1 Daymatic|Lange 1 Daymatic]] and was equipped with a newly developed winding mechanism.

<WRAP ud ud_mod>
**Reference:**
  * 345.033 [[red gold]]
  * 345.056 [[white gold]]

**Movement:**
  * [[Self-winding]] [[manufacture movement]] [[Lange L021|L021.3]], 21.600 A/h
  * Unidirectional winding rotor in 21 ct gold with additional weight segment in platinum
  * [[Plate]]s and [[bridge]]s in untreated [[nickel silver]]
  * [[Balance cock]] engraved by hand
  * [[Glucydur]] [[screw balance]], [[Nivarox]] [[balance spring]]
  * Precision beat-adjustment system with lateral setscrew and whiplash spring
  * 63 [[jewels]], including 5 in screwed gold [[chatons]]
  * 621 components
  * [[Power reserve]] 50 hours

**Case:**
  * 18 ct [[red gold]] or [[white gold]]
  * Ø 41.9 mm, height 12.1 mm
  * Front and caseback: [[antireflective]] [[sapphire crystal]]

**Dial:**
  * Red gold version: solid silver, grey; hands red gold, hour and minute noctilucent
  * White gold version: solid red gold; hands [[rhodinated]] [[gold]]

**Functions:**
  * Hours, minutes, [[small seconds]]
  * [[Perpetual calendar]] with precisely jumping indications for [[big date]], day of week, month and leap year; [[moon phase indication]] with integrated [[day-/night
indication]]

**Bracelet:**
  * red gold version: red-brown leather strap
  * white gold version: dark-brown leather strap

**Limited edition:**
  * White gold version 150 pieces
</WRAP>


{{tag>Watch_models Watches_with_perpetual_calendar Watches_with_moon_phase A._Lange_&_Söhne_models  A._Lange_&_Söhne_Lange_1_models}}