Today i did what i was asking myself since i got the watch. Is the Naiad lock really water resistant?
To me it always had a weak feeling when closing those casebacks.
So after i tried a 2x AR Crystal today with blue coating, which i didnt liked, i put the watch in my brand new water pressure Tester Machine.
5Bar - passed 6Bar - passed
Ok, its really tight and secured! i didn't do more but i believe it would even pass 7-10 Bar.
But sure all gaskets were lubricated before.
And another positive side effect - before installing the original Crystal again i polished it with a Micro fibre towel and you know what? That "Dull" Crystal is nearly gone...Its much clearer now and the Dial pops out more.
Maybe there are some residues from Manufacturing on it?