The Valjoux 72C watch movement, which was introduced in 1928, features an indirect sub-second function and incorporates shock protection using elastic pivots. The design of the movement includes a steady transition from the pivot to the thin end of the staff, reducing the risk of breakage at that point. Additionally, the movement's construction minimizes the potential for breaking at the transition from the pivot to the thick arbor end. This movement is manually wound and primarily incorporates a sub-second display.