Hamilton
Calibre H-31
Automatic chronograph
Specifications
- Maker
- Hamilton
- Type
- Automatic chronograph
- In-house
- Not stated
- Power reserve
- 60 h
- Frequency
- Not found in sources
Sources
- Official Hamilton retrieved October 19, 2026
Used in
| Watch | Ø | Thickness | Lug-to-lug |
|---|---|---|---|
| Hamilton American Classic Intra-Matic Auto Chrono 40 mm H38416111 | 40 mm | 14.45 mm | 49 mm |
| Hamilton Khaki Aviation Takeoff Auto Chrono - Limited Edition H76776733Discontinued | 46 mm | 15.95 mm | — |