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The manufacture Oris Calibre 400 automatic movement is fully designed and developed by the brand, with a concept focused on catering to the modern mechanical watch owner’s greatest concerns. Aesthetically, it’s simple and minimalist for a mechanical movement, with undecorated full bridges interrupted only by the prominent balance wheel and symmetrical twin mainspring barrels. These twin barrels are the first clue to one of the Calibre 400’s biggest selling points – its massive 120 hour power reserve. The brand also claims to have conducted an intensive study into mechanical movement breakdowns, and found the most common failure point for automatic movements to be the ball bearing system that allows the winding rotor to spin. With this in mind, Oris have ditched the traditional ball bearing track entirely for the Calibre 400’s winding rotor, replacing it with a far simpler and more durable slide bearing system with a metal stud inside a lubricated track.
https://www.ablogtowatch.com/oris-annou ... -movement/
Ebels are a lot like women that lack a low cut dress that zips up the side...neither get the love that they deserve...