Patek Philippe Complications 5396G ANNUAL CALENDAR, MOON PHASES Watch.?

In watchmaking, a complication is defined as anything a mechanical watch may do that goes beyond simply telling the time and/or date. Patek Philippe specializes in a variety of complications including: Annual Calendars, dual time zones, and World Time displays. Patek Philippe prides themselves on these complications adding value as they are useful in everyday situations and allow the watchmakers to utilize the height of their knowledge.