The IP 12 Caliber
![Dessins_techniques Habillage du Calibre](http://www.isoprog.ch/wp-content/uploads/2012/02/Dessins_techniques1-300x257.jpg)
Wrapping Class
Mechanical Caliber 16.5 lines (37.2 mm)
IP 12: Hour and Minute in the center and small second at 6 o’clock
![fonctions ip 12](http://www.isoprog.ch/wp-content/uploads/2012/02/fonctions-ip-12-150x150.jpg)
- 1 Running position and manual winding
- 2 Time setting
- Number of jewels: 19, Fréquency: 21600 A/h (3 Hz)
- ~50 hours of running time