IWC Watchmaker assembles the Ingenieur Perpetual Calendar 41 (IW344903)

The Ingenieur Perpetual Calendar 41 is the first stainless steel model to combine Kurt Klaus’ perpetual calendar with the Gérald Genta-derived Ingenieur design. The integrated bracelet execution in stainless steel delivers the robustness and waterproofing of a sports watch. Complementing the grid-patterned dial, sunray counters and an azurage-finish moon phase disc provide additional visual depth and reflect the light. Four decades after the premiere of the IWC perpetual calendar developed by Kurt Klaus, this ingenious module is delivered in a full sports execution for the first time.