Buren 547
Data: Buren cal: 547
- 21 jewels, automatic wind, sweep second.
- Size: 11.5''' 25.60 mm.
- H: = 5.35 mm.
- N: = 18.000 A/h.
- Power reserve: 36 h.
- Mainspring: 1.40 - 7.5 x 0.07 x 280
Versions: 9.25'''
- 535: sub second.
- 536: sweep second.
- 537: sweep second.
- 538: power reserve, sub second.
- 539: power reserve, sweep second.
- 540: power reserve, sweep second.
Versions: 11.5'''
- 541: sub second.
- 542: sweep second.
- 543: sweep second.
- 544: power reserve, sub second.
- 545: power reserve, sweep second.
- 546: power reserve, sweep second.
- 547: sweep second.
- 549: sweep second.