====== Jaeger-LeCoultre Master Grande Tradition Tourbillon à Quantième Perpétuel ======
{{wst>image_cr|Jaeger-LeCoultre|Master Grande Tradition Tourbillon à Quantième Perpétuel}}

**Master Grande Tradition Tourbillon à Quantième Perpétuel** is a luxury wristwatch by [[Jaeger-LeCoultre]] introduced in [[2009]].

[[Tourbillon]] model in the series [[Master Control]], which, rare for this type of [[complication]], is driven by a [[self-winding]] movement. Like all pieces of the [[Master Control]] series, it must also subject to the infamous 1,000 Hours test before delivery. In addition to the already extremely complex model [[Jaeger-LeCoultre Master Tourbillon|Master Tourbillon]] the watch has the additional [[complication]] of a [[perpetual calendar]].

The technical characteristics of the automatic calibre [[titanium]] tourbillon cage, balance with variable inertia and high frequency, weight segment on [[ceramic]] ball bearings. The completely manually decorated movement affirms the perfect mastery of rare crafts that are exercised in the [[manufacture]]. The refined aesthetics and the unique elaborations are a tribute by Jaeger-LeCoultre to the traditional high watchmaking art.

The watch is available in [[rose gold]] (limited to 300 pieces), in 950 [[platinum]] and by a limited edition of 300 pieces in 18 ct [[yellow gold]].


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**Reference:**
  * Q500242A (rose gold)
  * Q500649A (platinum)
  * Q500142A (yellow gold) (limited to 300 pieces)

**Movement:**
  * [[Self-winding]] [[manufacture movement]] [[JLC 987]], 28,800 A/h
  * [[Tourbillon]], cage in [[titanium]], [[perpetual calendar]]
  * Manually [[finished]]
  * Escapement system [[escapement wheel]] and [[lever]] in diamond-coated [[Silicon]]
  * [[Weight segment]] in 22 ct [[rose gold]], carved from one piece, decorated with [[Clous de Paris]] pattern
  * Components 401 (yellow gold), 403 (platinum, [[rose gold]])
  * [[Jewels]] 47 (yellow gold), 49 (platinum, [[rose gold]])
  * [[Power reserve]] 48 h

**Case:**
  * Ø 42 mm in [[platinum]], 18 ct [[red gold]] or [[yellow gold]] (limited to 300 pieces)
  * Domed, antireflective [[sapphire crystal]]
  * [[Sapphire crystal]] caseback with incorporated loupe above the escapement unit
  * [[Waterproof]] to 5 atm

**Dial:**
  * Bronze color with matte velouté-cut and [[Clous de Paris]] pattern
  * Solid gold indices
  * Dauphine hands for hour and minute

**Functions:**
  * Hours, minutes
  * [[Perpetual calendar]] with date, day, month, year and [[leap year]]
  * [[Moon phase]]
  * Regulator minute [[tourbillon]] with seconds hand on the cage

**Bracelet:**
  * Black or brown alligator leather strap with [[folding clasp]] in 18 ct rose gold, [[white gold]] or yellow gold
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{{tag>Watch_models Watches_with_tourbillon Watches_with_perpetual_calendar Jaeger-LeCoultre_models}}