XF 7 Friday Sevenfriday-S2/01, an ordinary valve that changes color with day after day. These precision machinery, which played an important role in the Second Industrial Revolution, inspired us and led to the birth of S2/01. The bronzed dynamic ring, palladium and bronze open design that surrounds the outer ring of the S2/01 case are all a tribute to the main valves of the Industrial Revolution. The S2/01 is a compelling watch that is characterized by the progress and pride of the industrial revolution.