Ulysse-Nardin Marine Chronograph Annual Calendar

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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.
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Technical Specifications:
The case, in stainless steel, measures 43mm. It has double AR-coated sapphire crystals and it is water resistant to 100 meters.
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Movement is the Swiss automatic Ulysse-Nardin in-house caliber UN-153 with Silicium escapement and spring, 28’800 vph and a power reserve of 52 hours. Functions are: 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. Date at 6’clock.

The dial can be had in egg shell white or blue with Roman numerals.

It comes on a dark blue leather strap with a steel folding buckle.

 

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