While integrating an annual calendar complication into its Marine Chronograph, Ulysse Nardin’s main aim was to combine elegance with an easy to use solution.

And the new Ulysse Nardin Marine Chronograph Annual Calendar is actually very simple to use.

Entirely manufactured in-house—including the silicium balance-spring, this self-winding movement beats at a frequency of 4 Hz (28,800 vph) with a power reserve of around 52 hours.

The Ulysse Nardin Marine Chronograph Annual Calendar can be matched to a strap with folding buckle (rubber or alligator leather) or to a steel bracelet .

Halfway between a perpetual calendar, which doesn’t need to be corrected before the year 2100, and a simple calendar that requires five manual adjustments a year, the annual calendar recognises months composed of 30 and 31 days with the exception of February. So it only requires manual correction once a year.

Ulysse Nardin’s watchmakers successfully reduced the annual calendar mechanism to a dozen additional components compared to an average of at least thirty elements. The movement allows the time and calendar pointers to be moved in either direction. This way the movement needed only three additional wheels.Simplicity starts from the UN-153 calibre.

The design of 43 mm stainless steel case is characterised by the typical elements of the Marine collections, including a ribbed bezel and a screw-crown covered with rubber to guarantee water resistance to 100 metres / 330 feet.

Finally, the date is displayed in a round aperture at 6 o’clock. The latter also features a month display which is easy to read thanks to a red hand indicating the current month.Apart from the central hands indicating the hours, minutes, and seconds, the dial – available in white or blue – features a 30-minute counter at 3 o’clock, the 12-hour counter at 6 o’clock and the continuous seconds counter at 9 o’clock.