# Hamilton Khaki Field King Auto Review by A.I. WatchMetrics

## Watch Summary
The Hamilton Khaki Field King Auto is a classic field watch that honors military heritage with a rugged 40mm stainless steel case, highly legible black dial featuring bold Arabic numerals and railway indices accented by Super-LumiNova for low-light visibility, powered by the Swiss-made automatic H-40 movement with an impressive 80-hour power reserve, making it perfect for the everyday adventurer or urban explorer seeking reliable toughness without ostentation.

## Overall Watch Rating: 7.1/10.0

**Cohesiveness Metric (9.5/10.0)** - As a standalone field watch, it achieves near-perfect unity of form, function, and heritage, much like the iconic Dirty Dozen military pieces.
**Material Metric (9.3/10.0)** - Premium 316L stainless steel with sapphire crystals front and back delivers exceptional durability and clarity, on par with higher-end tool watches from Tudor.
**Dials & Design Metric (8.8/10.0)** - The clean, legible dial with luminous Arabic numerals and subtle texture offers timeless field watch appeal, rivaling the best from Marathon or Luminox.
**Versatility Metric (8.5/10.0)** - Seamlessly transitions from office casual to outdoor pursuits with 100m water resistance and comfortable 22mm lug width, outperforming many dedicated sports watches.
**History & Innovation Metric (8.1/10.0)** - Rooted in Hamilton's WWII military legacy with a modern 80-hour power reserve upgrade, it stands alongside established field icons like the Seiko Alpinist.
**Movement Metric (7.5/10.0)** - The robust H-40 automatic based on ETA 2824-2 provides reliable 25-jewel performance with extended reserve, comparable to workhorse calibers in mid-tier Swiss watches.
**Brand Metric (6.0/10.0)** - Hamilton offers solid Swiss reliability with strong heritage under the Swatch Group umbrella, akin to Citizen or Seiko in the accessible mid-tier segment.
**Functions Metric (5.0/10.0)** - Delivers essential timekeeping with a date window at 3 o'clock, meeting average expectations for a no-frills field watch.
**Rarity Metric (4.1/10.0)** - Common production at around $945 retail keeps it accessible but unremarkable in scarcity compared to limited-run microbrands.
**Complications Metric (3.9/10.0)** - A simple date complication provides basic utility without venturing into more complex territory like GMTs on travel watches.

## Total Performance Score (TPS): 9.9

## WM Collector Grade: A+

## Performance Insights: Excels in material quality, design legibility, and movement reliability while offering outstanding value far exceeding its mid-tier pricing expectations.

## TPS Interpretation: Exceptional Value: The watch punches well above its weight with robust construction and heritage appeal at a fraction of luxury field watch costs.

## Watch Data
[Picture URL] - https://www.hamiltonwatch.com/dw/image/v2/BBSQ_PRD/on/demandware.static/-/Sites-masterCatalog_Hamilton/default/dw8e5b3b2b/hi-res/H64455533_khaki-field-auto_40_black_leather-black_BVB.jpg?sw=800&sh=800&sm=fit; [backPicture] - https://www.hamiltonwatch.com/dw/image/v2/BBSQ_PRD/on/demandware.static/-/Sites-masterCatalog_Hamilton/default/dw123a4b8e/hi-res/H64455533_khaki-field-auto_back.jpg?sw=800&sh=800&sm=fit; [lumePicture] - https://www.hamiltonwatch.com/on/demandware.static/-/Sites-masterCatalog_Hamilton/default/dwfdfdfdf/lume-example.jpg; [Nickname] - Khaki Field King; [Brand] - Hamilton; [Model] - Khaki Field King Auto; [Country] - Switzerland; [Product Link] - https://www.hamiltonwatch.com/en-us/h64455533-khaki-field-auto.html; [reviewLink] - https://www.hodinkee.com/articles/hamilton-khaki-field-king-auto-hands-on; [Movement Type] - Mechanical - Automatic; [Movement Name] - H-40; [# Secondary] - 1; [watchDescription] - Classic 40mm field watch with black dial, Arabic numerals, date at 3, 80-hour power reserve, sapphire crystals, and 100m water resistance; [caseWidth] - 40; [lugToLugLength] - 48; [thickness] - 11.45; [lug] - 22; [waterResist] - 100; [powerReserve] - 80; [beatFrequency] - 21600; [lume] - Super-LumiNova; [jewels] - 25; [caseMaterial] - Stainless Steel; [watchGlass] - Sapphire; [Bezel] - Fixed; [caseback] - Sapphire Exhibition; [Crown] - Screw-down; [Strap] - Leather; [Shape] - Round; [Dial] - Black Arabic; [Seconds] - yes; [Date] - yes; [Calendar] - no; [Chiming] - no; [Chronograph] - no; [Compass] - no; [dateCompilation] - no; [DigitalDisplay] - no; [Dress] - no; [Field] - yes; [GMT] - no; [Mechanical Alarm] - no; [Moonphase] - no; [Tourbillon] - no; [worldTimer] - no; [powerReserveIndicator] - no; [Diver] - no; [Pilot] - no; [racing] - no; [Skeleton] - no; [Vintage] - no; [StyleFormal] - no; [StyleCasual] - yes; [StyleSports] - yes; [StyleTravel] - no; [StyleAdventure] - yes; [StyleCollector] - yes; [StyleTool] - yes; [StyleStatement] - no; [StyleVintage] - no; [StyleSmart] - no; [StyleCustom] - no; [TPS_new] - 9.9; [TPSgrade] - A+; [TPSimpliedPrice] - 385;

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