This model is driven by the FC-718 Manufacture automatic caliber, with 26 jewels and a 42-hour power reserve, is completely developed in-house at the brand's manufacture in Plan-les-Ouates in Geneva. The technological genius of this timepiece is that all functions are easily accessible through the crown, there are no extra push buttons sticking out on the sides of the case. Simple to use, the Worldtimer function can be used by selecting the desired city and placing it at the 12'oclock position on the dial.