Head to head
Hamilton Khaki Field Auto 42mm vs Seiko 5 Sports
Two field-watch favourites. The Khaki Field has military heritage and a Swiss-made feel; the Seiko 5 Sports is a rugged, great-value daily automatic.
| Spec | Hamilton Khaki Field Auto 42mm | Seiko 5 Sports |
|---|---|---|
| Price | $795 | $325 |
| Case size | 42 mm | 42.5 mm |
| Thickness | 11 mm | 13.4 mm |
| Lug-to-lug | 53 mm | 46 mm |
| Case material | Stainless steel | Stainless steel |
| Movement | Automatic | Automatic |
| Caliber | H-10 | 4R36 |
| Power reserve | 80 h | 41 h |
| Water resistance | 100 m | 100 m |
| Introduced | 2025 | 2019 |
- The Seiko 5 Sports is the less expensive of the two, at roughly 41% of the Hamilton Khaki Field Auto 42mm's catalogue price.
- The Seiko 5 Sports has the larger case at 42.5 mm.