Audemars Piguet
Calibre 6401
Automatic chronograph
Specifications
- Maker
- Audemars Piguet
- Type
- Automatic chronograph
- In-house
- Yes
- Power reserve
- 55 h
- Frequency
- 28,800 vph (4 Hz)
Sources
- Official Audemars Piguet retrieved October 16, 2026
Used in
| Watch | Ø | Thickness | Lug-to-lug |
|---|---|---|---|
| Audemars Piguet Royal Oak Selfwinding Chronograph 38 mm (calibre 6401) 26450ST.OO.1356ST.01-B | 38 mm | 11.1 mm | — |
| Audemars Piguet Royal Oak Offshore Selfwinding Chronograph 37 mm 26430TI.OO.A358CA.01-B | 37 mm | 11.5 mm | — |