IWC Schaffhausen Portofino Hand-Wound Big Date

The IWC Portofino Hand-Wound Big Date, reference IW516101, has a 45 mm case in white gold. The case measures 13.1 mm thick; the movement is manual-winding and has a 192-hour power reserve and 30 jewels. The grey dial has a large double-digit date display, small hacking seconds and a power reserve indicator under arched-edge sapphire glass. The watch is on a black alligator leather strap by Santoni. The case carries a water-resistance rating of 30 metres. The movement has Côtes de Genève, perlage and polishing decoration. Calibre 59230 operates at a frequency of 28,800 vibrations per hour.