The automatic COSC-Licensed PF441 chronometer motion that this Parmigiani vintage operates on provides a fifty five-hour electrical power reserve, owing to its oscillating mass, and that is in delicately engraved gold, and will be admired with the sapphire crystal caseback. And admire it you are going to, since it shows https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/