The automated COSC-certified PF441 chronometer movement that this Parmigiani vintage operates on offers a fifty five-hour electric power reserve, owing to its oscillating mass, which is in delicately engraved gold, and may be admired from the sapphire crystal caseback. And admire it you are going to, mainly because it shows https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/