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Hamilton Khaki Field 40mm Mens Watch
Ref. H64455133
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Stepping up in the same colour and case shape
The Khaki Field line draws directly from Hamilton's long history of supplying the US military with field instruments, and the King variant sits at the top of that range by adding a full day display at twelve o'clock alongside the date — a layout that gives it a more complex face than the standard Field without pushing it toward dress territory. The 24-hour track running inside the hour indices is a quietly functional touch that most owners come to appreciate over time. At 40mm the case reads larger on the wrist than that number alone suggests, because 50mm lug-to-lug is generous and the elongated lugs carry the watch well toward the edges of the wrist. The satin-brushed case sides hold their military utility feel while the polished fixed bezel provides enough contrast to keep the watch from reading as purely utilitarian. The H-40, derived from the ETA C07.641 architecture, is one of the more dependable automatic movements available at this kind of watch, and its 80-hour reserve means a weekend off the wrist does not result in a reset on Monday morning. Micro-adjustment on the folding clasp means the bracelet fit can be dialled in precisely without sending it to a jeweller for link removal.
- Reference
- H64455133
- Brand
- Hamilton
- Collection
- Khaki Field
- Case size
- 40mm
- Case thickness
- 11.15mm
- Lug width
- 20mm
- Case material
- Stainless steel
- Case shape
- Round
- Dial
- Black
- Crystal
- Sapphire
- Bezel
- Fixed
- Movement
- Automatic
- Calibre
- ETA C07.641
- Functions
- Day-date
- Water resistance
- 50m
- Bracelet / strap
- Stainless steel bracelet
- Strap colour
- Silver
- Clasp
- Deployant clasp
- Lume
- Super-LumiNova
- Retailer
- Mappin & Webb
Additional specifications
- Lug-to-lug
- 50mm
- Power reserve
- 80 hours
- Origin
- Swiss made
Learn more about Hamilton
Hamilton was founded in Lancaster, Pennsylvania in 1892, and its early business was the railroad. American rail accidents caused by unsynchronised timekeeping had forced the industry to adopt strict standards, and Hamilton built pocket watches accurate enough to meet them — earning the description the watch of railroad accuracy.
Two things then defined it. The first was war: Hamilton supplied over a million watches to American forces in the Second World War, suspending civilian production entirely, and its marine chronometers were fitted across the US Navy.
The second was electricity. The Ventura of 1957 was the first battery-powered electric wristwatch, and its asymmetric shield-shaped case, designed by Richard Arbib, looked like nothing before it. Elvis Presley wore one in Blue Hawaii.
Hamilton's cinematic presence is unusually deep — over five hundred films — and includes the watches designed for 2001: A Space Odyssey with Stanley Kubrick, and appearances in Interstellar and Tenet.
American manufacturing ended in 1969 as the quartz crisis approached. The brand was acquired by the Swiss and is now part of the Swatch Group, based in Biel, where it occupies a distinctive position: American design heritage, Swiss production, and ETA movements with long power reserves at accessible prices. The Khaki Field, descended from the wartime issue watches, is its best-known line.
- 1892
- Founded in Lancaster, Pennsylvania.
- 1918
- Supplies the first US airmail flights.
- 1957
- The Ventura is the first electric wristwatch.
- 1968
- Designs the watches for 2001: A Space Odyssey.
- 1974
- Becomes Swiss-owned; now part of the Swatch Group.
Also in 4 collections
This watch appears in Stainless Steel Watches (3,102), Automatic Watches (1,425), Sports Watches (714) and Field Watches (63).
What the specifications mean
A mechanical watch for everyday wear.
Strengths
- 40mm suits most wrists
- Sapphire crystal, which resists scratching
- 80-hour reserve survives a weekend off the wrist
- Luminous hands and markers for low light
- Sits in the lower half of Hamilton's range as we list it
Worth knowing
- 50m suits rain and handwashing, not swimming
Compare alternatives
Watches from other brands at a similar price, style and size, so you can see what else your budget can buy.
| Specification | H64455133 | T1224071605100 | C0294301601100 |
|---|---|---|---|
| Price | £715 | £620 | £755 |
| Case size | 40mm | 40mm | 40mm |
| Water resistance | 50m | 50m | 100m |
| Movement | Automatic | Automatic | Automatic |
| Strap | Stainless steel bracelet | Leather strap | Leather strap |
| Power reserve | 80 hours | — | — |
| This watch |
|
|
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.
Will it fit my wrist?
Lug-to-lug is 50mm, which suits wrists from roughly 16.5cm (6½ inches) upward.
Lug-to-lug decides fit more than case diameter does.
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
Mappin & Webb is the only UK retailer we track stocking this reference new, at £715. There is nothing to compare it against today.
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