A Passion for Chronographs / Episode 21
Perhaps the most classic of complications, and one of the most appreciated by aficionados, the chronograph function is an additional mechanism within a mechanical watch that allows the measurement of elapsed time.
The function uses the seconds hand that can be independently started, stopped, and reset without impacting the indication of the current time. Classic manually-wound Chronographs have always held a pivotal role in the collection of Patek Philippe complications.