Check Out the First Watches That Count Leap Seconds
One thing that most mechanical wristwatches don’t keep track of is leap years, where an extra day is added to February. To correctly show February’s leap day, you would need a perpetual calendar complication in your watch, which is comparatively much more complicated, and much more expensive than a normal calendar complication. But here, you’ll see the Hoptroff watch, which is specifically designed to keep track of leap seconds, and is the first one ever made to do so.
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Introducing The First Watches To Account For Leap Seconds, From Hoptroff London