IWC SchaffhausenPortofino Hand-Wound Eight DaysRef: IW510103

Inside the Portofino Hand-Wound Eight Days, the in-house Caliber 59210 measures time with precision and reliability for a full 192 hours, or exactly eight days, before stopping automatically. In fact, the power reserve actually lasts up to nine days: one extra day of reserve is used to maintain as constant a torque as possible, ensuring smooth and consistent operation throughout the entire autonomy period. Owners can always be confident by winding their watch just once per week. To check the remaining energy, simply read the power reserve indicator on the dial. Along with the small seconds and date displays, it creates a dial layout that is both elegant and well-balanced. The balance wheel, designed without a regulator index, oscillates at 28,800 vibrations per hour, ensuring high precision, complemented by the Breguet overcoil hairspring crafted following traditional watchmaking techniques. The timepiece features a steel case, a silver-plated dial and solid gold indices. Equipped with a transparent sapphire crystal case back, paired with a brown Santoni alligator leather strap.