HamiltonKhaki Field Auto 42
In the photo: a Khaki Field of another reference. A licensed sample image; the official one will replace it. Header: a Hamilton Khaki Field.
Indicative price band. The exact price is on Amazon.
See price on Amazon- The classic Swiss field watch at 42 mm: 80 hours of reserve, a Nivachron hairspring, sapphire, 100 m and a steel bracelet.
- H-10 movement with 80 h of power reserve at 21,600 bph.
- Hacking seconds and hand winding.
- Sapphire crystal and 100 m water resistance.
- 42 mm diameter, — thick and — lug-to-lug.
Affiliate link: if you buy, Amazon pays Calibrario a commission and you pay the same. Availability on Amazon.es checked on 21 October 2026.
In figures
Will it fit your wrist?
Move the slider to your wrist circumference. Seen from above, your wrist is roughly a third of that wide; if the lug-to-lug is wider, the watch overhangs.
With a 17 cm circumference, your wrist is about 56 mm wide.
Specifications
Movement
| Movement | H-10 |
|---|---|
| Movement maker | ETA, Powermatic 80 base |
| Power reserve | 80 h |
| Beat rate | 21,600 bph † |
| Hacking seconds | Yes † |
| Hand winding | Yes † |
Case and crystal
| Diameter | 42 mm |
|---|---|
| Thickness | — |
| Lug-to-lug | — |
| Case | Steel |
| Crystal | Sapphire |
| Water resistance | 100 m |
| Rotating bezel | No |
| Display caseback | Yes |
Strap and dial
| Lug width | 22 mm |
|---|---|
| Strap or bracelet | Steel bracelet |
| Dial | Black |
| Complications | Date |
Buying
| Indicative price band | €700–760 |
|---|---|
| Style | Field |
| Brand origin | Switzerland |
Data checked against the manufacturer’s official website on 21 October 2026. A dash means the manufacturer does not publish that figure.
Figures marked † are published neither by the brand nor by the movement maker: they come from a specialist technical source, Caliber Corner. calibercorner.com
Sources: hamiltonwatch.com (archived copy)
The movement
The 80-hour Swiss automatic the Swatch Group fits to Tissot, Hamilton, Certina and Mido.
Against its rivals
| Figure | Hamilton Khaki Field Auto 42 | Hamilton Khaki Field Auto 38 | Hamilton Khaki King |
|---|---|---|---|
| Indicative price band | €700–760 | €660–710 | €800–850 |
| Movement | H-10 | H-10 | H-40 |
| Power reserve | 80 h | 80 h | 80 h |
| Beat rate | 21,600 bph | 21,600 bph | 21,600 bph |
| Crystal | Sapphire | Sapphire | Sapphire |
| Water resistance | 100 m | 100 m | 50 m |
| Diameter | 42 mm | 38 mm | 40 mm |
| Thickness | — | 11.5 mm | 11.2 mm |
| Lug-to-lug | — | — | — |
| Hacking seconds | Yes | Yes | Yes |
| Hand winding | Yes | Yes | Yes |
| Rotating bezel | No | No | No |
| Strap or bracelet | Steel bracelet | Leather strap | Steel bracelet |
| Brand origin | Switzerland | Switzerland | Switzerland |
| See price on AmazonSee specs | See price on AmazonSee specs | See price on AmazonSee specs |
Watches of the same style with the nearest price band. In red, the best figure in each row.
Comparisons
Making sense of the specs
Power reserveHow long it keeps running off the wrist, and why 80 hours changes daily life.Read the guide 
Sapphire, Hardlex or mineralWhich crystal scratches, which chips and which is worth it.Read the guide Frequently asked questions
Which movement does the Hamilton Khaki Field Auto 42 use?
The H-10, from the Powermatic 80 family, made by ETA, Powermatic 80 base. It gives 80 h of power reserve at 21,600 bph.
Does it have hacking seconds and hand winding?
The seconds hand stops when you pull the crown, and it can be wound by hand by turning it.
Can you swim or dive with it?
It is water resistant to 100 m: you can swim and shower with it, but it is not designed for scuba diving.
What size wrist does it suit?
There is no lug-to-lug figure for this model.