Quote:
Originally Posted by Lol-x
What are the nature of the modifications to the ETA movement?
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I don‘t have details, but if you wind up the IWC, it feels significantly smoher than a regular ETA powered watch. And as said , the rotor noise is different and much more silent and smooth.
So I assume, that IWC modifies the mainspring section and corresponding geartrain and at least the rotor bearrings.