The automated COSC-Qualified PF441 chronometer motion that this Parmigiani classic runs on provides a fifty five-hour electrical power reserve, owing to its oscillating mass, and that is in delicately engraved gold, and might be admired with the sapphire crystal caseback. And admire it you might, because it displays many of https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/