[JAEGER - LECOULTRE Watches] Automatic winding system: AZ version movement is two-way winding Other versions of the market are one-way uplink Automatic winding noise: The AZ version only has a slight chain sound, which is the same as the genuine product Other versions on the market are the noise caused by the automatic rotation rubbing the caseback and movement deck Structure of the movement: The AZ version of the movement opens the mold by disassembling the same genuine movement