The 201 is the result of three years of research and development by a five-man team at Urwerk. In this innovative timepiece, time is displayed using telescopic minute hands operating through the middle of three orbiting and revolving hour satellites. The new Linear 100 Year Plus Indicator, inspired by the odometer of a car, keeps track of how many years the movement has been in operation. Powered directly from the winding of the crown (as is the oil-change indicator), this linear gauge has no detrimental effect on either the timekeeping precision of the movement or the power reserve. The linear indicator advances every 6 years up to a maximum of 118 years.