Known for: The art of simplicity - it's a complex puzzle, and the new Ulysse Nardin model proves it. Manufacturing almanacs - mechanically complex but technically simple, elegant yet easy to use. Simplicity is always elusive and original at the same time. The new Nautical Chronograph Annual Calendar fully fits this statement. The exterior is simple and uncluttered, and the intricacies of the mechanics are hidden from the sight of its owner. The annual calendar, with its indexes adjusted in two directions: forward and backward, with a mechanism configured in silicon technology, fully manufactured for the maximum precision of the movement UN-153.
Its functional annual calendar, which in a series of similar models can be positioned between perpetual calendars, in which the first adjustment mechanism of the calendar indicators does not need to be before 2100, and the simple calendar mechanism needs to be adjusted in five years, performed manually. The almanac mechanism is installed on a year: it automatically detects all months and their days: 30 or 31, but not February. This adjustment is required throughout the year.
Typically, the assembly of the calendar mechanism requires about 30 individual parts masters, and they successfully assembled it using only 12. During the creation of the movement, UN-118 prepared a simple calendar mechanism, which was later modified: three additional gears were added, and the annual calendar was turned. The essence of this approach is similar to the vision of watchmaking genius Ludwig Oechslin, in which simplicity resembles philosophy.
The new movement UN-153 is completely designed and assembled on the factory walls and has a frequency of 28,800 vibrations per hour. System spiral balance in silicon, manufactured by Sigatec and co-owned by Ulysse Nardin.