The new Marine Chronograph Annual Calendar from Ulysse Nardin is a new paradigm to premium watchmaking. The product of a quest for perfection, its annual calendar offers a mechanical solution of disconcerting purity.
Simple to use, adjustable both on the front and back, this piece is imbued with the values of innovation, reliability and high-precision that are so cherished by the watchmaker. Its UN-153 calibre is entirely manufactured in-house—including the silicium balance-spring.
Halfway between a perpetual calendar, which doesn't need correcting before the year 2100, and a simple calendar that requires five manual adjustments a year, the annual calendar is mechanically programmed for one year: it recognises months composed of 30 and 31 days, but not February. It therefore only needs to be corrected once a year.
The model also includes a chronograph feature. Apart from the central hands indicating the hours, minutes, and seconds, the 30-minute counter is displayed at 3 o'clock, the hour counter at 6 o'clock and the small second counter at 9 o'clock. The latter also features a month display, which includes sub-dials offering useful guide-marks when setting. Finally, the date is displayed in a window at 6 o'clock.
In-house designed movement
Silicium escapement and spring, 28’800 v/h
Power-Reserve: Approximately 52 h
Chronograph with seconds hand in the centre
30 minutes counter at 3 o’clock
12 hours counter at 6 o’clock
Small seconds counter at 9 o’clock
Annual calendar, backward/forward setting, with
Months counter at 9 o’clock
Date at 6’clock
Bezel: Fluted, stainless steel
Crown: Screw down security crown, covered with rubber
Diameter: 43 mm
Water-resistance: 100 m
Crystal: Anti-reflective sapphire crystal
Case-back: Open case back with sapphire crystal
Egg shell or blue with roman numerals
Leather strap with folding buckle