my 425 does about 8 days, but it was tested/regulated by a watchmaker
The power reserve typically exceeds 5 days which is remarkable for a movement supposed to replace one that only has a 3-day power reserve. However the accuracy drastically decreases after 3 days on a full wind. Has your PAM425 maintained accuracy all throughout its 7-8 day operation?
My 449 actually goes for 4-5 days!