Brass is heated to 700 degrees Celsius, and stamped into shape. Trained workers get parts ready for assembly. Pieces are silver-plated, antiqued, polished and lacquered. Components are assembled. Final assembly happens in a dust-proof room.
The dial is put together, hands are added, crown and case-back inserted and affixed into place. Now watches are ready for quality control. Watches are pulled and twisted. Buttons are pushed 3,000 times! Leather straps are pulled 100 times! Perfection!