Another great release this year at Watches & Wonders 2024 is the new IWC Portugieser Perpetual Calendar 44. Available in four versions, two in 18K white gold with Horizon Blue ref. IW503703 and Dune ref. IW503704 dials, and another two in 18K in Armor Gold —IWC proprietary alloy—, with either an Obsidian ref. IW503702 or a Silver Moon ref. IW503701 dial.