Panerai · Automatic

P.2003/5

The self-winding development of the P.2002, and Panerai's first in-house automatic, from 2007. Three barrels give it ten days rather than eight, tracked by a linear power-reserve indicator. The rotor is the significant change: the eight-day movement had to be wound by hand, and adding automatic winding to a multi-barrel train of that length is the harder problem.