I own a PAM320 and I have an 8" wrist. Do you think I need to order and oversized strap? The factory rubber strap that is on my Pam320 is a little short and I have to put it on the second to the last hole in the strap in order for it to fit. I sometimes feel like the watch might come undone since the strap is a little short for my wrist. Can anyone five me and idea of what size strap I should be looking for?
I have 7.3" wrist and i use 8cm (buckle) + 12.5cm (belt) with my thick (>3mm) straps.
I think that 8.5cm + 13.5cm should cover you while leave ~2cm excess from buckle.
I'm sure that Snpr9696can help you much more with his experience.