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