The automated COSC-Licensed PF441 chronometer motion that this Parmigiani classic operates on offers a 55-hour electrical power reserve, owing to its oscillating mass, which happens to be in delicately engraved gold, and can be admired in the sapphire crystal caseback. And admire it you can, mainly because it displays a https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/