IWC Schaffhausen Portugieser Chronograph Rattrapante Edition "Padrão dos Descobrimentos"

The IWC Portugieser Chronograph Rattrapante Edition "Padrão dos Descobrimentos", reference IW371218, is a chronograph with a 40.9 mm case in 18-carat 5N gold. This special edition has a 12.4 mm thick case. The movement is manual-winding and has a 44-hour power reserve and 27 jewels. Behind convex sapphire glass, the silver dial has small hacking seconds and a split-seconds function. The watch has a blue alligator leather strap. The case carries a water-resistance rating of 30 metres. The movement has Côtes de Genève and perlage decoration. Calibre 76240 operates at a frequency of 28,800 vibrations per hour.