====== A. Lange & Söhne 1815 Tourbillon ======

{{wst>image_cr|A. Lange & Söhne|1815 Tourbillon Rotgold|A. Lange & Söhne 1815 Tourbillon, red gold}}
{{wst>image_cr|A. Lange & Söhne|1815 Tourbillon Platin|A. Lange & Söhne 1815 Tourbillon, platinum}}

{{wst>image_cr|Lange|L102.1}}

**1815 Tourbillon** is a luxury wristwatch by [[A. Lange & Söhne]].

Presented in [[2014]], this model in the "1815" series not only features the [[complication]] of a [[tourbillon]] and the addition of a [[stop-second]] invented and patented by Lange, but also adds a [[zero-reset]] function in which the second hand jumps back to zero when the crown is pulled. This allows the watch to be accurately set and restarted to the second.

<WRAP ud ud_mod>
**Reference:**
  * 730.025 [[platinum]]
  * 730.032 [[red gold]]

**Movement:**
  * [[Manual winding]] [[manufacture movement]] [[Lange L102|L102.1]], 21.600 A/h
  * Precision adjustment: [[screw balance]]
  * [[Tourbillon]] with zero-reset
  * Glashütte [[three-quarter plate]] in untreated [[nickel silver]]
  * NIVAROX-1 [[flat hairspring]] from in-house production
  * [[Glucydur]] [[balance]]
  * 20 [[jewels]], including 5 in screwed gold [[chaton]]s, 1 diamond capstone
  * Diameter: 32.6 mm; height: 6.6 mm
  * 262 components
  * Power reserve 72 hours

**Case:**
  * 18 ct [[red gold]] or [[platinum]]
  * Ø 39.5 mm, height 11.1 mm
  * [[Sapphire crystal]]
  * Caseback with [[sapphire crystal]] sighting window

**Dial:**
  * Red gold version: solid silver, argenté, hands in [[blued]] steel
  * Platinum version: copper [[enameled]], hands in [[blued]] steel

**Functions:**
  * Hours, minutes
  * [[Small seconds]] via tourbillon at 6 h
  * [[Zero-Reset]]

**Bracelet:**
  * Crocodile leather strap

**Limited edition:**
  * Platinum version: 100 pieces
</WRAP>

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