The 9F and 9S calibers in nine chapters
Discover how Calibers 9F and 9S set new standards of precision.

Vol.1
The birth of the ultimate quartz movement, Caliber 9F
The 9F and 9S calibers in nine chapters
Discover how Calibers 9F and 9S set new standards of precision.
Vol.1
The birth of the ultimate quartz movement, Caliber 9F