Blancpain Villeret Quantième Annuel GMT case with an annual calendar complication and a GMT function. It is the first time in a stainless steel case.
The layout of the white dial was designed to offer instant legibility of the annual calendar indications and, in fact, the day, date and month are smoothly read off one after the other on the right side.
The transparent case back brings more colour revealing the yellow gold winding rotor, adorned with a guilloché motif, of the self-winding 6054F calibre. This 4 Hz (28,800 vph) movement offers 72 hours of power reserve and requires only one date adjustment per year, between February and March. For the rest of the year, the watch automatically moves from the 30th or the 31st to the first day of the following month.