For the first time, the Double Mystery hands-free hours and minutes has a dial with two turning disks with different looks, and therefore manages to reveal extremely clean lines, at the same time as enabling the time to be read clearly. This complication features an ingenious mechanism under the dial. In the past, only a few watchmakers have attempted anything resembling this watch, the results however were often merely visual and not mechanical. The glimmer of the diamonds on the dial and case is fabulous. Nothing interrupts the harmony and elegance of the Cintre Curvex's curves or the restraint of the rounded cases, which conceal the mystery of the complication. The Frank Muller Double Mystery 42-DM-QTR-SAI-BAG-CD is complemented by an automatic movement with 42 hours of power reserve.