Mechanical automatic, exclusive Dubois Dépraz calibre, 58 jewels.
Decorated and engraved rotor.
Central bridge and 6 chamfered satin-finished seconds bridges in black.
Minute-wheel with Pierre DeRoche logo.
Hand affixed by a transverse pin.
6 retrograde seconds hands on gear, strip spring return.
Hours, minutes, seconds with retrograde function in 6 ten-second sectors.
Moving retrograde hand indicator.