Ulysse Nardin company, named after its founder the accomplished watchmaker Ulysse Nardin , was founded in 1846. since its establishment, it was well known for the high quality and high-accuracy craftsmanship, the most worth to be mentioning is their Marine Chronometers, regarded as the most accurate mechanical clocks ever made, achieved a precision of around a tenth of a second per day. For its high accuracy, from the year 1846 to 1975, Ulysse Nardin has achieved as much as 4324 certificates of the 4504. As the most complicated wristwatch ever made with 21 complications, the Ulysse Nardin Astrolabium was added into the Guniness Book of Records in 1989. it can indicate the position of the sun, the moon and the stars in the sky at any given hour as seen from the earth as well as sunrise and the sunset, dawn and dusk , moonhases, moonrise and moonset, eclipses of sun and moon, the month and the day of the week. At the forefront of outstanding developments in horological technique, a whole array of models of Ulysse Nardin models fully covered the extent of horological experience.