IWC Replies | Sabrina Herzog on what happens when you miss the century slide swap.

Description

Engineered through 2499. But what happens if you forget to change your perpetual calendar's century slide by 11:59 pm on December 31, 2299?

You have 100 years to make the switch, but if you don't: will the mechanism lock up when midnight strikes?

IWC watchmaker Sabrina Herzog goes under the dial to find out.

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