1. Richard Mille's RM UP-01 Ferrari
We just wrote about the world’s thinnest watch back in March, then, in July, a new contender claimed the title with a watch that’s just 0.05mm thinner. Richard Mille’s RM UP-01 Ferrari slides into top place with a 1.75mm case, the movement itself measuring 1.18mm. A watch’s winding stem measures at least 1.5mm, so the brand had to rethink the winding mechanism altogether. In short, it nixed it and replaced it with two crowns. It also did away with the balance and dart in the patented escapement. The dial is on the broad side but it does resemble a Ferrari dashboard so we’re all for it.
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