A Zenith watch is really worth the time of day

THE CHRONOGRAPH Developed in 1969, Zenith's El Primero automatic chronograph movement has been at the heart of many Swiss watches, including the Rolex Daytona. With its balance wheel oscillating at 36,000 vibrations per hour, it's the only mechanical movement in the world that can measure time down to one-tenth of a second. A 30-minute counter sits at the three o'clock position. The state of the 50-hour power reserve is indicated by the hand at the bottom of the dial.
THE COMPLICATION The Multicity shows the time simultaneously in the major city of each of the world's 24 time zones thanks to a revolving disk anchored to the hour hand. Rotate the outer crown until the time zone you're in is over the 12 o'clock position, then read off the hour in your selected city.
THE GRAND DATE The 'Grande Date' displays the day of the month using a unique three-disk mechanism, with an instantaneous double-jump at midnight.