Its iconography consists of a grey dial with a burgundy seconds track. All time telling hands are rendered white while hands related to the chronograph function are rendered orange.
Powered by the caliber 861, it is a modern update of the original caliber 321 that went to the moon. Besides switching out the column wheel for a shuttle cam, several components were made from special alloys to better resist the extreme temperature variation in space.
Deviating slightly from its Speedmaster counterparts, the case took on a lug-less barrel shape with a distinct sunray finish and sharp bevelled edges.