# IWC Big Pilot 7-day IW389105 Review by A.I. WatchMetrics

## Watch Summary

The IWC Big Pilot's Watch 43 IW389105 is a modern interpretation of the legendary 1940s Flieger pilot watch, featuring a 43mm stainless steel case, black dial with oversized Arabic numerals, propeller-style hands, and signature onion crown. This automatic timepiece targets enthusiasts seeking a bold, highly legible daily pilot watch with authentic aviation heritage — powered by the in-house Calibre 82100 Pellaton automatic movement with 60-hour power reserve (marketed as "7-day" in the heritage line), 100m water resistance, and soft-iron inner case for anti-magnetic protection.

## Overall Watch Rating: 8.4/10.0

- **Dials & Design Metric (9.2/10.0)** - The massive numerals, clean black dial, and iconic pilot aesthetics deliver exceptional legibility and heritage appeal, benchmarking against classic Flieger designs like the original B-Uhr.
- **Movement Metric (8.8/10.0)** - The in-house Calibre 82100 with Pellaton winding and ceramic components offers robust performance and modern reliability.
- **History & Innovation Metric (9.0/10.0)** - Direct descendant of IWC's WWII observer watches with modern anti-magnetic and power reserve advancements.
- **Material Metric (8.5/10.0)** - Stainless steel case with soft-iron cage and sapphire crystal provides durable pilot-ready construction.
- **Versatility Metric (8.2/10.0)** - Bold size suits casual and aviation-inspired wear well, though less formal.
- **Functions Metric (8.0/10.0)** - Excellent lume, date, and anti-magnetic protection serve practical pilot needs.
- **Brand Metric (8.5/10.0)** - IWC's prestigious aviation heritage places it firmly in luxury tier.
- **Rarity Metric (6.5/10.0)** - Steady production of the 43mm model limits exclusivity.
- **Complications Metric (4.5/10.0)** - Time and date only — classic but basic for the price.

## Total Performance Score (TPS): 8.1

## WM Collector Grade: A-

## Performance Insights: The watch excels in design, history, and movement with iconic pilot heritage and strong legibility. Rarity and complications are moderate, representing excellent value in the luxury pilot segment.

## TPS Interpretation: Excellent Value: The watch delivers authentic aviation heritage and robust construction at its price.

## Watch Data
[Picture URL] - https://www.iwc.com/media/catalog/product/cache/image/1200x1200/i/w/iw389105-big-pilots-watch-43-front.jpg; [backPicture] - https://www.iwc.com/media/catalog/product/cache/image/1200x1200/i/w/iw389105-big-pilots-watch-43-movement.jpg; [lumePicture] - https://www.iwc.com/media/catalog/product/cache/image/1200x1200/i/w/iw389105-lume.jpg; [Nickname] - Big Pilot 43; [Brand] - IWC; [Model] - IW389105; [Country] - Switzerland; [Product Link] - https://www.iwc.com/en/watch-collections/pilot-watches/iw389105-big-pilots-watch-43.html; [reviewLink] - https://www.hodinkee.com/articles/iwc-big-pilots-watch-43-introducing; [Movement Type] - Automatic; [Movement Name] - Calibre 82100; [# Secondary] - 13500; [watchDescription] - Modern 43mm pilot watch with black dial, in-house automatic movement, and soft-iron anti-magnetic cage; [caseWidth] - 43; [lugToLugLength] - 51.8; [thickness] - 13.6; [lug] - 21; [waterResist] - 100; [powerReserve] - 60; [beatFrequency] - 28800; [lume] - Super-LumiNova; [jewels] - 22; [caseMaterial] - Stainless Steel; [watchGlass] - Sapphire; [Bezel] - Fixed; [caseback] - Solid; [Crown] - Screw-down; [Strap] - Leather or bracelet; [Shape] - Round; [Dial] - Black; [Seconds] - Yes; [Date] - Yes; [Calendar] - No; [Chiming] - No; [Chronograph] - No; [Compass] - No; [dateCompilation] - No; [DigitalDisplay] - No; [Dress] - No; [Field] - No; [GMT] - No; [Mechanical Alarm] - No; [Moonphase] - No; [Tourbillon] - No; [worldTimer] - No; [powerReserveIndicator] - No; [Diver] - No; [Pilot] - Yes; [racing] - No; [Skeleton] - No; [Vintage] - No; [StyleFormal] - 0; [StyleCasual] - 1; [StyleSports] - 1; [StyleTravel] - 0; [StyleAdventure] - 1; [StyleCollector] - 1; [StyleTool] - 1; [StyleStatement] - 1; [StyleVintage] - 1; [StyleSmart] - 0; [StyleCustom] - 0; [TPS_new] - 8.1; [TPSgrade] - A-; [TPSimpliedPrice] - 13500;

**A.I. WatchMetrics Review v37.5 Grok 4 Fast. December 22, 2025.**