Sinn 903 Series 903.ST.Ⅱ Navigation Chronograph with Column Wheel Movement and Rotating Bezel WatchSinn 903. ST. Description This is a navigation chronograph that has been completely redesigned from the iconic 903 series by Sinn. It features a movement with a column wheel, a rotating slide rule operated from the outer diameter of the watch, and applied indices made of hybrid ceramic with high density luminescent paint. Official Price 841,500 JPY (tax included) Reference 903. ST. Condition Brand New Ships from Japan Brand New Full Set (Box + Papers)