====== Jaeger-LeCoultre Réserve de Marche ======
The **Master Réserve de Marche** is a watch model from [[Jaeger-LeCoultre]] featuring a prominent [[power reserve indicator]].

===== Jaeger-LeCoultre Réserve de Marche Watches =====
Jaeger-LeCoultre first included a [[power reserve indicator]] or "réserve de marche" on the [[Jaeger-LeCoultre Powerwind|Powerwind]] in [[1948]], becoming the first company to put this signature [[complication]] into production. The power meter was placed on the dial, often in the 9-12 quadrant or at 12 00. When the [[Jaeger-LeCoultre Master Control|Master Control]] series was introduced in the 1990's, Jaeger-LeCoultre included a model named for this complication, the **Réserve de Marche**. The original model featured [[JLC 928|Cal. 928/2]] but later models switched to the [[Jaeger-LeCoultre Autotractor|autotractor]]-based [[JLC 938|Cal. 938]]. All feature date by pointer at 2 00, small seconds at 6 00, and [[retrograde]] power reserve at 10 00. Over the years, a [[display back]] was added and, in [[2012]], the case was enlarged from 37 mm to 39 mm with a cleaner dial.

The Réserve de Marche remains a favorite model in the Jaeger-LeCoultre lineup, lauded for its go-anywhere look, clean styling, and useful complications.

==== Powerwind/Powermatic ====
  *Main Article [[Jaeger-LeCoultre Powerwind]]

Jaeger-LeCoultre introduced this complication with [[JLC 481|Cal. 481]] in the [[1948]] [[Jaeger-LeCoultre Powerwind|Powerwind or Powermatic Ref. E 163]]. This watch used a simple aperture from about 11 30 to 12 30 on the dial to show a numbered wheel indicating power remaining. As power approached zero, the wheel background turns red. This watch was known as both "Powerwind" and "Powermatic", the latter name reflecting the increasing popularity of the term "automatic" for a [[self-winding]] watch movement.

==== Futurematic ====
  *Main Article [[Jaeger-LeCoultre Futurematic]]

The [[Jaeger-LeCoultre Futurematic|Futurematic Ref. E 501]] used a novel back-[[crown]] [[JLC 497|Cal. 497]] movement and case and reinvented the réserve de marche. Introduced in [[1951]], the Futurematic had a power reserve [[subdial]] on the face at 9 00. The power reserve hand pointed at 9 00 when fully wound and proceeded counter-clockwise to 12 00 when empty. Like later models, the final "hour" segment was darkened.

The later Futurematic Ref. E 502 with [[JLC 817|Cal. 817]] featured an aperture at 9 00 with a colored indicator behind a "porthole", more like the original Cal. 481 than the innovative Cal. 497. The Futurematic line ended by [[1958]].

==== Gentilhomme Réserve de Marche ====
  *Main Article [[Jaeger-LeCoultre Gentilhomme Réserve de Marche]]

Before "Réserve de Marche" became a model name, Jaeger-LeCoultre introduced a [[JLC 928|Cal. 928]]-based 35.5 mm model with very similar dial layout in their [[Jaeger-LeCoultre Gentilhomme|Gentilhomme]] line around [[1985]] and produced until about [[1993]]. This dial featured Roman numerals for every hour but the one obscured by the small seconds subdial at 6 00. A date subdial with a pointer is at 2 00 and a [[retrograde]] [[power reserve indicator]] pointer is centered just after 10 00 on the dial.

Models included 

  * 155.1.93
  * 155.140.930

==== Master Réserve de Marche, Cal. 928 ====
  *Main Article [[Jaeger-LeCoultre Master Réserve de Marche]]

The original Master Réserve de Marche featured [[JLC 928|Cal. 928/2]] with 43 or 45 jewels, which was introduced in [[1993]] and based on [[JLC 889|Cal. 889]].

All 37 mm Réserve de Marche models feature Arabic numerals at 12 and 9 and blued steel subdial hands. The original model was Ref. 140, with watches produced after [[2002]] being noted as Ref. 148. Later in the production run, the model switched from a single-fold clasp to a more modern split butterfly clasp. A solid caseback gave way to a display back later in the model run, with some featuring a hinged back cover.

Models included 

  * 140.2.93 Pink gold with black dial
  * 140.6.93 Platinum with dark blue dial ("Master Réserve de Marche Platine" limited edition of 250 pieces)
  * 140.8.38 Steel and diamonds
  * 140.8.93 Steel with silver dial
  * 148.84.02 Steel with diamond bezel, black dial
  * 148.84.03 Steel with diamond bezel, gold dial
  * 148.84.04 Steel with silver dial
  * 148.84.06 Steel with gray dial
  * 148.84.70 Steel with black dial
  * 148.24.01 Pink gold and silver dial

==== Master Réserve de Marche, Cal. 938 ====
  *Main Article [[Jaeger-LeCoultre Master Réserve de Marche]]

In [[2006]], Jaeger-LeCoultre introduced an updated version of the Master Réserve de Marche with the new [[JLC 938|Cal. 938]]. This movement features a [[free-sprung]] balance, uni-directional winding with ceramic ball bearings and 41 jewels. The 37 mm case is 9.3 mm thick and has a sapphire glass display back.

All 37 mm Réserve de Marche models feature Arabic numerals at 12 and 9 and blued steel subdial hands.

The 37 mm Master Réserve de Marche was retired in [[2012]] and replaced by the 39 mm [[Jaeger-LeCoultre Master Ultra Thin Réserve de Marche]], which is actually thicker.

Models included 

  * 148.84.02 Steel with diamond bezel, black dial
  * 148.84.03 Steel with diamond bezel, gold dial
  * 148.84.04 Steel with silver dial
  * 148.84.06 Steel with gray dial
  * 148.84.70 Steel with black dial
  * 148.24.01 Pink gold and silver dial

==== Master Ultra Thin Réserve de Marche ====
  *Main Article [[Jaeger-LeCoultre Master Ultra Thin Réserve de Marche]]

For [[2012]], Jaeger-LeCoultre introduced a new Réserve de Marche model at [[SIHH]]. It was renamed to fit into the [[Jaeger-LeCoultre Master Ultra Thin|Master Ultra Thin]] range, though the new model is actually slightly thicker than the old at 9.85 mm. This is balanced by a new 39 mm case with a narrower bezel and smaller crown and blue painted subdial hands. The Arabic 9 and 12 dial markers were also replaced by triangular markers all around. Like its predecessors, the Ultra Thin uses the automatic [[JLC 938|Cal. 938]] with 43 hour power reserve, though the blue dial model uses the similar Cal. 938/1 with identical specifications.

Models include 

  * 137.84.20 Steel with silver dial
  * 137.84.80 Steel with blue dial
  * 137.25.01 Pink gold and diamonds with eggshell beige dial
  * 137.25.20 Pink gold with eggshell beige dial

===== Other Réserve de Marche Watches =====
==== Master Calendar Réserve de Marche ====
  *Main Article [[Jaeger-LeCoultre Master Calendar Réserve de Marche]]

The **Master Calendar Réserve de Marche**, introduced in [[2006]], is 40.5 mm and has a different dial layout. A symmetrical retrograde Réserve de Marche is placed at 12 00 and a [[moon phase indicator]] is found at 6 00. Day and month apertures are placed at 9 00 and 3 00, respectively, with date by central pointer hand. It was produced at least since 2006. The Master Calendar Réserve de Marche proved unpopular and was retired in [[2012]] in favor of the non-RdM [[Jaeger-LeCoultre Master Calendar|Master Calendar]]

Models 

  * 151.84.2A Steel with silver dial
  * 151.24.2A Pink gold with silver dial
  * 147.24.1A Pink gold with white dial (40 mm)

==== Master 8 Days ====
  *Main Article [[Jaeger-LeCoultre Master 8 Days]]

The **Master 8 Days** is often referred to as a Réserve de Marche due to its similar dial layout. It uses [[JLC 877|Cal. 877]] and features a [[power reserve indicator]] closer to 11 00, shifts the [[small seconds]] to 5 00, adds a [[day/night indicator]] at 1 30, and a 2-digit date aperture at 7 00. The case is larger at 41.5 mm. The Master 8 Days was introduced in [[2006]] and discontinued around [[2012]].

The related [[Jaeger-LeCoultre Master 8 Days Perpetual|Master 8 Days Perpetual]] was introduced in [[2004]] and updated at [[SIHH]] in [[2011]].

  * 146.8.17 Steel with silver dial
  * 146.2.17 Pink gold with silver dial
  * 160.84.20 Steel with silver dial
  * 160.24.20 Pink gold with silver dial
  * 160.8.47 Steel with black dial

===== See Also =====
  * [[Power reserve indicator]] ("réserve de marche")


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