IWC Portugieser Perpetual Calendar 42 IW344202

Watchmaker Kurt Klaus’s name is forever related to the IWC House: his sophisticated version of the perpetual calendar makes it easy to operate this royal complication showing the day, date and month, including shorter months and February, without the need for any adjustment until 2100. This reference with a 42.4 mm gold case also boasts a leap year indicator and a perpetual moon phase that doesn’t need to be adjusted for incredible 577 years! The IWC-developed automatic movement is equipped with the Pellaton winding system and offers a power reserve of 60 hours.