IWC Schaffhausen Portugieser Chronograph Ceratanium®

The IWC Portugieser Chronograph Ceratanium®, reference IW371631, is a chronograph with a 41 mm case. This limited edition has a Ceratanium case measuring 13 mm thick. Self-winding calibre 69355 has a 46-hour power reserve, 27 jewels and 205 components. Convex sapphire glass has antireflective coating on both sides, and a see-through case back reveals the movement. The black dial has black appliqués, black hands and small hacking seconds. A black textured rubber strap is fitted to the watch, whose water-resistance rating is 30 metres. The movement's frequency is 4 Hz.