The P.6000 calibre, hand-wound with a power reserve of three days. Completely created by Panerai’s high quality watchmaking Manufacture in Neuchâtel, the calibre is 15½ lignes in diameter and its balance, which oscillates at a frequency of 21,600 vibrations per hour, is securely fixed in position by a bridge with twin supports. For greater precision when adjusting the time, the calibre also has the device which stops the balance when the winding crown is pulled out