Slender and robust, refined and elegant. The base movement, the VMF 5401 was specially designed to receive additional mechanisms. In this version it is fitted with a perpetual calendar module by Dubois-Depraz (5100), yet it is still only 4.2 mm thick. Calendar hand at 3 o’clock, 7 days with hand at 9 o’clock. 12 months with hand at 12 o’clock, moon phase in window at 6 o’clock. Leap-year indicator at 12 o’clock.