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Hamilton Khaki Field 40mm Mens Watch
Ref. H64455533
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Stepping up in the same colour and case shape
The Khaki Field traces its roots to Hamilton's long history of supplying field watches to the United States military, and this reference carries that lineage forward with the full 24-hour inner track and Arabic numeral dial that mark the line's military utility. It also has a more recent claim to recognition: the version worn by Dr Gregory House in the final season of the television series, which brought it to a wider audience without Hamilton doing anything to court that association. At 40mm with an 11.15mm profile, it wears more modestly than most automatics at this rating — the crown guards read as purposeful rather than bulky, and the day window sitting directly above the date at twelve is a layout inherited from field watch convention, where orientation matters. The brown leather with white contrast stitching sits well against the brushed case and makes the military-utility intentions legible at a glance. The sapphire caseback is the detail worth knowing about: the H-40 inside is built on ETA 2834-2 architecture but tuned for the 80-hour reserve, and watching the rotor settle when the watch is set down at the end of the day is a reminder that Hamilton has kept actual manufacturing in-house rather than simply badging bought movements.
- Reference
- H64455533
- Brand
- Hamilton
- Case size
- 40mm
- Case thickness
- 11.15mm
- Lug width
- 20mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Black
- Crystal
- Sapphire
- Movement
- Automatic
- Calibre
- ETA 2834
- Functions
- Day-date, Skeleton dial
- Water resistance
- 50m
- Bracelet / strap
- Leather strap
- Strap colour
- Brown
- Clasp
- Buckle
- Lume
- Super-LumiNova
- Retailer
- Goldsmiths
Additional specifications
- Power reserve
- 80 hours
Your new watch
Frequently asked questions, and things you should know about this watch
Can I swim with it?
Showering yes, swimming no. 50m covers splashes and brief immersion, but a swimming stroke generates well above the pressure that figure describes.
Will the glass scratch?
Unlikely. Sapphire is second only to diamond in hardness and shrugs off everyday marking.
Does it need a battery?
No. It is automatic — the motion of your wrist winds it, and there is no cell to replace.
How long does it run for when it's not worn?
About 80 hours fully wound — enough to sit off the wrist over a weekend and still be running.
What size strap does it take?
20mm. Any strap of that width will fit, and on most modern watches quick-release bars make the swap a two-minute job with no tools.
Is it a men's or women's watch?
Listed as men's, though at 40mm it sits in the range that suits anyone.
Cheapest place to buy
Goldsmiths is the only UK retailer we track stocking this reference, so there is nothing to compare it against today.
Who are Goldsmiths?
Goldsmiths has been selling watches in Britain since 1778 and is part of the Watches of Switzerland Group, which is listed on the London Stock Exchange. They are an authorised dealer, so a watch comes with the manufacturer’s own warranty.
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