What kind of movement is in the 5990?
The chronograph movement combines tradition (column-wheel drive) and innovation (vertical disk clutch). Self-winding CH 28-520 C FUS caliber, with flyback chronograph and Travel Time function. The skeletonized hand displays home time while the solid hand indicates local time. The self-winding caliber CH 28-520 C FUS movement combines three convenient and user-friendly complications: a flyback chronograph, a Travel Time function (two time zones with two separate hour hands; the skeletonized hand shows home time) and an analog date at 12 o’clock which is synchronized with local time.