IWCのインスタグラム(iwcwatches) - 5月19日 21時21分

The exclusive #IWCPortugieser Tourbillon Rétrograde Chronograph Boutique Edition (Ref. IW394005) combines a flying tourbillon with a retrograde date display and a chronograph.

The "whirlwind" involves the balance wheel rotating around its axis in a cage. This not only provides a visual spectacle on the dial. The constant rotation reduces the influence of gravity on the oscillation system and increases the accuracy of the timepiece.

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