Movements

Calibre 6639

Self-winding
Complete Calendar
Moon phases
Power reserve in hours 192 hours
Calibre diameter 32.00 mm
Calibre thickness 7.60 mm
Jewels 35
3 mainspring barrels
Secured calendar and moon-phases mechanism
Secured movement
Titanium free sprung balance with gold regulation screws
Components 303
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Calibre 6639

6639
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Key models

6639-3631-55B6639-3637-55B6639-3637-MMB