IWC Schaffhausen Iw503302 Portugieser Perpetual Calendar

Owners widely praise the IWC Schaffhausen Iw503302 Portugieser Perpetual Calendar for its elegant, gentlemanly style and simple crown-based setting mechanism for the perpetual calendar. The secular perpetual calendar function, accounting for leap year exceptions and featuring a moon phase accurate for millions of years, is highlighted as an engineering marvel. However, the 44.2mm case diameter is frequently noted as being too large for smaller wrists, and some find the dial busy. One owner reported accuracy of +17 seconds per day. On balance, owners rate the IWC Schaffhausen Iw503302 Portugieser Perpetual Calendar highly for its sophisticated complication and refined aesthetic, despite concerns about its substantial size.