As one of the top ten watches in Switzerland, Ulysse Nardin has gone through a century and a half. In its long-term background, exquisite watchmaking technology and innovative ability have become synonymous with Athens watches. Committed to the breakthrough of watch technology and endless creativity are the main spiritual elements that constitute the brand value and classic watchmaking skills of Athens watches. The Athens Watch was founded in the19th century (1846) when it was a maritime power. With such a special time and space background, the Athens watch with a long history of 150 years has an indissoluble bond with the navigation watch. In the era of sea power, no amount of courage and perseverance can match the fear of being lost in the sea. In addition to relying on the sun and horizon to determine the course, navigators also need an absolutely accurate astronomical clock to calculate the navigation position. The clock of Athens Navigation Observatory, which is famous for its precise function, can calculate the error of half a second and accurately calculate the latitude and longitude of ships at sea.