Although human beings are conditioned to the constant presence of gravity, its effects are a significant hurdle for mechanical watchmaking. The pull of gravity across a movement?s gear train as it sits in a static position eventually leads to slight inaccuracies, and over the centuries watch brands have devised intricate solutions to counteract gravity?s effects. […] The post Zenith Unveils Limited-Edition Defy Zero G Sapphire And Defy 21 Double-Tourbillon Sapphire Watches appeared first on aBlogtoWatch.

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