Hamilton
Calibre H-21-Si
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 Khaki Aviation Converter Air Zermatt Limited Edition H76706730Discontinued | 44 mm | 14.6 mm | — |
| Hamilton Khaki Aviation X-Wind Auto Chrono 45 mm H77916920 | 45 mm | 14.85 mm | — |