# Jaeger-LeCoultre Master Control Chronograph Calendar Q413812J Review by A.I. WatchMetrics

## Watch Summary
The Jaeger-LeCoultre Master Control Chronograph Calendar Q413812J is a sophisticated luxury sports chronograph blending timeless elegance with technical prowess, featuring a 40mm stainless steel case housing the in-house automatic Calibre 759—a flyback chronograph with day, date, and month displays on an opaline blue dial with applied indices and dauphine hands—boasting a 65-hour power reserve, making it perfect for the refined enthusiast who values haute horology complications in a versatile daily wearer.

## Overall Watch Rating: 9.3/10.0

**Movement Metric (9.9/10.0)** - The in-house Calibre 759 offers peerless complexity, Geneva-striped finishing, and chronometric precision rivaling the finest from Patek Philippe or Vacheron Constantin.
**Complications Metric (9.6/10.0)** - Flyback chronograph paired with a full calendar delivers seamless usability and sophistication on par with elite integrated complication watches.
**Dials & Design Metric (9.6/10.0)** - The opaline blue dial with balanced subregisters and exquisite legibility stands out as beautifully executed, akin to classic IWC Portugieser chronographs.
**Material Metric (9.4/10.0)** - Premium stainless steel with sapphire crystal and superlative brushing/polishing provides durability and refinement comparable to Rolex Oystersteel cases.
**Brand Metric (9.5/10.0)** - Jaeger-LeCoultre's prestigious heritage and manufacture status place it firmly among elite peers like A. Lange & Söhne.
**History & Innovation Metric (9.5/10.0)** - JLC's century-plus of pioneering over 1,200 calibers, including this flyback evolution, cements its iconic legacy.
**Versatility Metric (9.0/10.0)** - Seamlessly transitions from boardroom to weekend adventures, much like a modern Omega Speedmaster but more refined.
**Functions Metric (8.8/10.0)** - Comprehensive timekeeping with flyback chrono and triple calendar offers robust utility for a luxury chronograph.
**Rarity Metric (8.4/10.0)** - Limited production relative to its $18,500 price point elevates it above mass-luxury models like the Breitling Chronomat.

## Total Performance Score (TPS): 9.7

## WM Collector Grade: A+

## Performance Insights: Excels in movement, complications, and design with near-perfect execution across the board, delivering exceptional value far exceeding its implied $28,500 fair-market price.

## TPS Interpretation: Exceptional Value: This watch crushes price expectations with in-house haute horology mastery and versatile appeal.

## Watch Data
[https://www.jaeger-lecoultre.com/dam/jlc/master-control/q413812j/master-control-chronograph-calendar-q413812j-front.png/jcr:content/root.asset/jlc-1920x1080.png] - https://www.jaeger-lecoultre.com/dam/jlc/master-control/q413812j/master-control-chronograph-calendar-q413812j-front.png/jcr:content/root.asset/jlc-1920x1080.png; [https://www.jaeger-lecoultre.com/dam/jlc/master-control/q413812j/master-control-chronograph-calendar-q413812j-back.png/jcr:content/root.asset/jlc-1920x1080.png] - https://www.jaeger-lecoultre.com/dam/jlc/master-control/q413812j/master-control-chronograph-calendar-q413812j-back.png/jcr:content/root.asset/jlc-1920x1080.png; [https://www.chrono24.com/images/uhren/lume-q413812j.jpg] - https://www.chrono24.com/images/uhren/lume-q413812j.jpg; [Nickname] - Master Control Chrono Calendar; [Brand] - Jaeger-LeCoultre; [Model] - Master Control Chronograph Calendar; [Country] - Switzerland; [Product Link] - https://www.jaeger-lecoultre.com/us-en/watches/master-control/master-control-chronograph-calendar-q413812j; [reviewLink] - https://www.hodinkee.com/articles/jaeger-lecoultre-master-control-chronograph-calendar-q413812j-hands-on; [Movement Type] - Mechanical Automatic; [Movement Name] - Calibre 759; [# Secondary] - 3; [watchDescription] - Elegant 40mm stainless steel flyback chronograph with day-date-month calendar on opaline blue dial; [caseWidth] - 40; [lugToLugLength] - 49.3; [thickness] - 12.7; [lug] - 20; [waterResist] - 50; [powerReserve] - 65; [beatFrequency] - 28800; [lume] - Super-LumiNova; [jewels] - 40; [caseMaterial] - Stainless Steel; [watchGlass] - Sapphire antireflective; [Bezel] - Fixed; [caseback] - Sapphire exhibition; [Crown] - Screw-down; [Strap] - Alligator leather; [Shape] - Round; [Dial] - Opaline blue; [Seconds] - Subdial; [Date] - yes; [Calendar] - yes; [Chiming] - no; [Chronograph] - yes; [Compass] - no; [dateCompilation] - no; [DigitalDisplay] - no; [Dress] - yes; [Field] - no; [GMT] - no; [Mechanical Alarm] - no; [Moonphase] - no; [Tourbillon] - no; [worldTimer] - no; [powerReserveIndicator] - no; [Diver] - no; [Pilot] - no; [racing] - no; [Skeleton] - no; [Vintage] - no; [StyleFormal] - yes; [StyleCasual] - yes; [StyleSports] - yes; [StyleTravel] - yes; [StyleAdventure] - no; [StyleCollector] - yes; [StyleTool] - no; [StyleStatement] - yes; [StyleVintage] - no; [StyleSmart] - no; [StyleCustom] - no; [TPS_new] - 9.7; [TPSgrade] - A+; [TPSimpliedPrice] - 28500;

**A.I. WatchMetrics Review v37.4 Grok 4 Fast. December 19, 2025.**