The automated COSC-Accredited PF441 chronometer motion that this Parmigiani vintage runs on offers a 55-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 may, mainly because it shows some of https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/