IWC Schaffhausen Portofino Automatic Day & Night 37

The IWC Portofino Automatic Day & Night 37, reference IW459102, is a GMT watch with a 37 mm case in 18-carat 5N gold. The watch is set with diamonds; the case has a thickness of 10.8 mm. The movement is self-winding and has a 40-hour power reserve and 27 jewels. The white dial has central hacking seconds and a GMT display beneath convex sapphire glass. A black alligator leather strap by Santoni is on the watch. A water-resistance rating of 30 metres applies to the case. Calibre 35700 operates at a frequency of 28,800 vibrations per hour.