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