====== A. Lange & Söhne 1815 Kalenderwoche ======
{{wst>image_cr|A. Lange & Söhne|1815 Kalenderwoche}}
{{wst>image_cr|Lange|L045.1}}

The **1815 Kalenderwoche** (Calendar Week) is a luxury watch from [[A. Lange & Söhne]].

This lavish wristwatch was released [[2006]] in collaboration with the long-established Munich watch store [[Andreas Huber]] on the occasion of its 150th anniversary. It offers the highest manufacture quality with the following features: [[Hand-wound]] manufacture movement caliber [[Lange L045|L045.1]] with hour and minute display. Unusual is the combination week of the year ([[calendar week]]) and [[weekday]], which gives the watch its name: A hand running along the outer edge of the dial shows the week of the year (1-52/53), a small hand at 6 shows the day of the week and the [[small seconds]].

The movement bears the inscription "Andreas Huber München 1856-2006".

The number 1815 in the name of the watch refers to the date of birth of the brand's founder [[Ferdinand Adolph Lange]], who was born in Dresden on 18 February [[1815]].

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**Reference:**
  * 245,021 [[yellow gold]]
  * 245,025 [[platinum]]
  * 245,032 [[red gold]]

**Movement:**
  * [[Manufacture]] [[manual winding]] movement, 21,600 A/h
  * [[Glucydur]] [[screw balance]], [[Nivarox]] 1 [[balance spring]] with [[swan's neck fine regulation]]
  * Patented beat adjustment mechanism
  * Glashütte [[three-quarter plate]]
  * [[Plate]]s and [[bridge]]s in untreated [[nickel silver]]
  * [[Balance cock]] engraved by hand
  * 29 [[jewels]], including 4 in screwed gold [[chaton]]s
  * 231 components
  * Power reserve 45 hours

**Case:**
  * 18 ct [[yellow gold]]/[[Red gold]] / [[Platinum]]
  * Ø 38.4 mm, height 9.8 mm
  * Above [[Sapphire crystal]]
  * Caseback screwed with six screws with [[Sapphire crystal]] sighting window

**Dial:**
  * Solid [[silver]], argenté
  * Hours, minutes, small seconds: Lancet hands in [[blued]] steel
  * Week, Day of week: gold

**Functions:**
  * Hours, minutes
  * [[Small seconds]] with [[hacking seconds]]
  * Central indication of the week of the year ([[calendar week]])
  * [[Day of week]]

**Bracelet:**
  * Crocodile leather strap with [[tang-type buckle]]

**Limited edition:**
  * je 50 pieces
</WRAP>

{{tag>Watch_models A._Lange_&_Söhne_models A._Lange_&_Söhne_1815_models}}