EL PRIMERO 21

Chronograph watches can measure and display elapsed time. Usually three subcounters on the dial display the elapsed seconds, minutes and hours.

Regatta chronographs feature a countdown which indicates the last minutes before the beginning of a nautical race. It was designed to prevent skippers from crossing the start line too early.

The power reserve indicator tells you the time the watch will continue to function. It can either be seen on hand winding or automatic watches.