Iwc Gst Perpetual Calendar. With the gst perpetual calendar, iwc merged the mechanical complexity of the caliber 79261 movement with the sturdy and sporty looks of the gst line. Find low prices for 18 iwc ref.

With the gst perpetual calendar, iwc merged the mechanical complexity of the caliber 79261 movement with the sturdy and sporty looks of the gst line. This is the iwc perpetual calendar chronograph titanium gst made in the early 2000s.