Portugieser Hand-Wound Tourbillon Day & Night IW545901

42.4mm, Obsidian

IWC

IWC

Portuguese Hand-Wound Tourbillon Day & Night IW545901

The Portuguese Hand-Wound Tourbillon Day & Night IW545901, Unveiled in 2024, Features a 42.4 mm 18K Armor Gold® case with an obsidian lacquer dial and gold-plated hands and appliques. Combined with a black Santoni alligator strap and a refined form, It underscores the elegant character of the Portuguese. It features a 1-minute flying tourbillon at 6 o'clock and a 24-hour spherical day & night indicator at 9 o'clock. Equipped with the IWC in-house manual-winding caliber 81925, It boasts sophisticated specifications such as an 84-hour power reserve, A 4Hz frequency, 60m water resistance, A see-through back, And silicon parts with diamond shell technology. It contains a special story of how a design idea suggested by a young apprentice watchmaker at IWC was adopted as an actual product.