Patek Philippe
Calibre CH 28-520 HU
Automatic chronograph
Specifications
- Maker
- Patek Philippe
- Type
- Automatic chronograph
- In-house
- Yes
- Power reserve
- up to 55 h
- Frequency
- 28,800 vph (4 Hz)
Sources
- Official Patek Philippe retrieved October 16, 2026
Used in
| Watch | Ø | Thickness | Lug-to-lug |
|---|---|---|---|
| Patek Philippe Complications 5930P (world time, chronograph) 5930P-001 | 39.5 mm | 12.86 mm | — |
| Patek Philippe Complications 5935A (world time, chronograph) 5935A-001 | 41 mm | 12.75 mm | — |