Simplicity is the hardest thing to achieve. It is the ultimate test of experience, the final push of genius. With the Marine Chronograph Annual Calendar, Ulysse Nardin has successfully applied this new paradigm to premium watchmaking.
Its annual calendar offers a mechanical solution which is simple to use, adjustable both on the front and back, and, at the same time, imbued with the values of reliability and high-precision, so cherished by the watchmaker. Its UN-153 caliber is entirely manufactured in-house including the silicium balance-spring. This particularly well designed movement allows the time and calendar pointers to be moved in either direction.
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 recognizes months composed of 30 and 31 days, but not February. It therefore only needs to be corrected once a year.
But where classic devices involve up to thirty components, watchmakers at Ulysse Nardin have managed to develop a system containing around only a dozen elements. In a development of the simple calendar developed for the UN-118 caliber, the annual calendar needed only three additional wheels.
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. The Marine Chronograph Annual Calendar bears the same classic forms as sailing instruments, including a ribbed bezel, a screw-crown guaranteeing perfect water-resistance, a full lug width ensuring stability on the wrist and a 43 mm diameter case for easy readability. The new model for 2016 conveys the the vibrant spirit of Ulysse Nardin
Movement: Caliber UN-153 In-house designed movement Silicium escapement and spring, 28’800 v/h
Power-Reserve: approximately 52 h
Functions: Chronograph with seconds hand in the center 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, ate at 6’clock
Case: Stainless steel
Bezel: Fluted, stainless steel
Dial: Egg shell or blue with Roman numerals
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
Strap: Leather strap with folding buckle