# Breguet Type XXI Review by A.I. WatchMetrics

## Watch Summary
The Breguet Type XXI is a premium pilot-style flyback chronograph that revives the brand's legendary 1950s aviation heritage for discerning collectors and professionals, boasting a robust 42mm stainless steel case housing the automatic Calibre 2385 with column-wheel chronograph, silicon escapement, and 50-hour power reserve, complete with a legible black sector dial, luminous markers, and 100m water resistance ideal for versatile daily wear.

## Overall Watch Rating: 9.3/10.0

**Rarity Metric (9.9/10.0)** - Its $49,700 retail price and ultra-limited production volumes deliver exclusivity on par with scarce Vacheron Constantin Overseas chronographs.
**Movement Metric (9.8/10.0)** - The Calibre 2385's flyback chronograph with exceptional finishing and silicon innovations outperforms most IWC pilot movements in refinement.
**Brand Metric (9.5/10.0)** - Breguet's storied haute horlogerie status and Swatch Group backing firmly establish it in the elite tier alongside F.P. Journe.
**History & Innovation Metric (9.4/10.0)** - Iconic 1950s French military origins combined with contemporary silicon escapement advancements match the legacy of Zenith's El Primero evolutions.
**Material Metric (9.4/10.0)** - Grade 5 steel case with sapphire AR crystal and meticulous brushing rivals the tactile quality of Audemars Piguet's Royal Oak.
**Dials & Design Metric (9.4/10.0)** - The classic sector layout with bold lume and guilloché accents sets a benchmark for legibility akin to vintage Type XX pieces.
**Complications Metric (9.2/10.0)** - The precise column-wheel flyback chronograph delivers reliability comparable to Rolex's Daytona but with superior reset speed.
**Versatility Metric (8.8/10.0)** - Balances sporty pilot utility with dressy elegance for office-to-adventure transitions better than most rigid divers like the Omega Seamaster.
**Functions Metric (8.4/10.0)** - Solid core offerings of time, date, and chronograph provide everyday utility on level with Grand Seiko sport models.

## Total Performance Score (TPS): 6.2

## WM Collector Grade: B+

## Performance Insights: Dominates in rarity, movement, and brand prestige while maintaining strong design and complications, delivering solid value slightly above its $32,000 implied price benchmark.

## TPS Interpretation: Good Value: The watch overdelivers on heritage complications and exclusivity relative to its luxury market positioning.

## Watch Data
[https://www.breguet.com/dw/image/v2/BFSH_PRD/on/demandware.static/-/Sites-masterCatalog_Breguet/default/dw2d5d5b5a/High_Resolution/3847ST-92-9WU_Type-XXI_Flyback_Chronograph_42_mm_Steel_Breguet_01_3847ST-92-9WU.jpg?sw=800&sh=800&sm=fit] - [https://www.breguet.com/dw/image/v2/BFSH_PRD/on/demandware.static/-/Sites-masterCatalog_Breguet/default/dwf1e5e5e1/High_Resolution/3847ST-92-9WU_Type-XXI_Flyback_Chronograph_42_mm_Steel_Breguet_03_3847ST-92-9WU.jpg?sw=800&sh=800&sm=fit]; [N/A] - [N/A]; [Type XXI Flyback] - [Breguet]; [Type XXI 3847ST/92/9WU] - [Switzerland]; [https://www.breguet.com/en-us/watches/type-xxi/3847st-92-9wu.html] - [https://www.hodinkee.com/articles/breguet-type-xxi-3817]; [Mechanical Automatic] - [Calibre 2385]; [# Secondary] - [43000]; [Luxury pilot flyback chronograph reissue with black dial and steel case] - [42]; [50]; [15.2]; [22]; [100]; [50]; [28800]; [Super-LumiNova]; [37]; [stainless steel]; [sapphire anti-reflective]; [fixed]; [sapphire]; [screw-down]; [alligator leather]; [round]; [black]; [yes]; [yes]; [no]; [no]; [yes]; [no]; [no]; [no]; [no]; [no]; [no]; [no]; [no]; [no]; [no]; [no]; [no]; [yes]; [no]; [no]; [no]; [no]; [yes]; [yes]; [yes]; [no]; [yes]; [yes]; [yes]; [no]; [no]; [no]; [no]; [no]; [yes]; [no]; [no]; [6.2] - [B+]; [32000];

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