The P.3001/10 calibre, designed and created at the Panerai Manufacture in Neuchâtel is a hand-wound movement characterised by hand-polished bevelling. The thickness of the calibre is 6.3 mm and the diameter is 16 ½ lignes, a substantial size which traces its origins to that of the movements which were fitted to the vintage Panerai models. The P.3001/10 calibre has different features: two barrels which guarantee 72 hours of power reserve, visible from the power reserve indication on the back, seconds reset and quick change of time. With this calibre the hour hand can be moved forwards and backwards in steps of exactly one hour. At the same time the date is adjusted accordingly. *The number of components, as well as the finish, varies according to the watch model and its calibre.