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.
Retail and secondary market prices can vary significantly based on material and condition. According to WatchCharts (as of early 2024–2026), expected price ranges are: Retail: Approximately $10,600 . Pre-owned: Often found between $4,700 and $6,700 . Rose Gold Models: Retail: Approximately $17,000 to $23,900 . Pre-owned: Approximately $13,500 . buy portofino hand-wound eight days
A dedicated display between 8 and 9 o'clock provides a clear countdown of the remaining energy. Design & Aesthetics While the mainspring can actually store enough energy
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: According to WatchCharts (as of early 2024–2026), expected
Reliable marketplaces for pre-owned versions include Chrono24 and specialized retailers like Watches of Mayfair . Portofino Hand-Wound - IWC