Annual Calendar Chronograph 5905/1A
A rare steel complication: a flyback chronograph with an annual calendar and an olive green dial.
Patek Philippe rarely makes a complicated watch in steel. The 5905/1A has a flyback chronograph and an annual calendar, on an integrated bracelet.
The dial is a sunburst olive green. Day, date, month and a day/night indication are in an aperture.
The case is 42 mm across and 14.13 mm thick. The movement is the self-winding calibre CH 28-520 QA 24H.
- Reference
- 5905/1A-001
- Case
- 42 mm, 14.13 mm thick, steel
- Movement
- Calibre CH 28-520 QA 24H, self-winding flyback chronograph
- Power reserve
- 45–55 hours
- Water resistance
- 30 m
- Functions
- Hours, minutes; flyback chronograph with 60-minute counter; annual calendar, day/night
- Notable
- Steel case, integrated bracelet
