Piaget is the king of ultra-thin watches, holding more than a dozen records in various categories. This expertise goes all the way back to 1957 with the invention of the Calibre 9P, the first Piaget ultra-thin movement and what today is a real classic. To celebrate the mark’s 140th anniversary, the Piaget has gone for the biggest record of all and released the Altiplano 900P, the world’s thinnest mechanical watch. It has taken some serious technological breakthroughs to get to a staggering 3.65mm thin and the result is a surprisingly wearable watch. Here we have an exclusive first look at this amazing watch, complete with live photos and pricing.

While Piaget holds many of the ultra-thin records, the overall thinnest mechanical watch title was previously held by Jaeger-LeCoultre for the Master Ultra-Thin Jubilee, which comes in at 4.05mm. But now, thinner by a full .4mm, the Altiplano 900P has climbed on top. Normally here we’d start talking about the thin movement and how it fits into the case, but we can’t here. The case and the movement are one unit with the Altiplano 900P.