Chronograph Annual CalendarThe Montblanc caliber MB 25.09 is the first movement that combines an annual calendar with a chronograph function, inspired by one of the first Minerva wrist chronographs from the 1920s.
- Material: 18 k rose gold
- Movement: Self-winding chronograph movement, MB 25.09
- Diameter: 42 mm
- Water-resistance: 3 bar
- Wempe reference: MB200033