Piaguet have revealed the thinnest mechanical movement today at the SIHH 2014
How thin you ask? 3.65 mm thin! How thin is that? Well grab 2 Quarters and stack them you have about 3.65 mm. That is outrageously thin.
The Altiplano 38 mm  900P now holds the title of thinnest mechanical watch taking it away from Jaeger-LeCoultre that made a watch 4.05 mm thin
The Altiplano 38 mm 900P features 145 parts. What makes this timepiece really interesting is that the case and movement are one, the movement can’t be removed from the casing the case-back itself is the baseplate. The Watch will cost you about 30k USD, 18k white gold case and a black alligator strap. The watch has a power reserve of 48 hours.
I do love the visibility of the movement in this timepiece.
The fact that it’s also only 38 mm is outstanding for its thinnest and in my opinion its a perfect wrist size. The white gold casing goes perfectly with the dial as well as the black alligator strap.