Tag Heier CAR2C90.FC6341 Carrera Calibre 1887 Automatic Chronograph 45mm Mens Watch. Carbon matrix composite case. Carbon Matrix Composite is a special compound used in aerospace applications, it is light weight and resistant to wear and temperature changes. Crown and pushers located at the top of the case Carbon matrix composite dial Hand applied 5 minute increment Arabic numerals. Steel hands with a strip of luminescent material for easier reading in the dark.