The Panerai 31 Giorni PAM01631 Explained: How a One-Month Power Reserve Actually Works
Panerai's halo release at Watches and Wonders 2026 carries a 31-day hand-wound power reserve from the new P.2031/S caliber with four mainspring barrels. A working dealer's read on how the technical execution actually works, where it sits against the Lange 31 and other ultra-long-reserve watches, and what it signals for the rest of Panerai's catalog.
May 15, 2026