u/DeeM0ney

Picked up a Panerai Due PAM00676 and got another set of straps. They look to be a quick exchange system, but don’t have the button like I see on the Panerai site. The current spring bars on the black strap don’t fit into the brown.

Is there a special type of spring bar needed for the brown strap? Or would a thinner spring bar suffice?