Most models come with high-quality alligator leather straps by the Italian shoemaker Santoni, known for their unique orange leather lining. Market Guide & Pricing

While the mainspring can actually store enough energy for nine days, IWC engineers added a special gear that stops the movement after precisely 192 hours. This ensures the watch only runs when the mainspring provides constant torque, maintaining higher accuracy until the very end.

The dial features a balanced arrangement with a date window at 3 o’clock, small hacking seconds at 6 o’clock, and the power reserve indicator. Material Variants:

Reliable marketplaces for pre-owned versions include Chrono24 and specialized retailers like Watches of Mayfair . Portofino Hand-Wound - IWC