This is one of the high-end watches from ULYSSE NARDIN, manufacture of marine-inspired watches. This Quadrato, in white gold case, is an elegant watch, with a lot of presence on the wrist. It is a watch full of complications: dual time, GMT, large date and perpetual calendar. The caliber was designed thanks to Ludwig Oechslin (technical director of UN), producing in 1996 the best perpetual calendar caliber, which added a very innovative function: it can be adjusted by the owner, through the crown. That is, it solves one of the big problems of the perpetual calendar: any major adjustment to the standard date must be done by a professional watchmaker.