Quote Originally Posted by Manxdiver View Post
Personally, I don't think there's the need to test it for 300m. It has two substantial o-rings on the caseback. If these are not compromised on a 3 or 5 ATM test, I'm pretty sure they'll be good for 300m. How deep are you planning on taking it? Can't help with the bezel.
This.

I was told by a repair specialist that the seals take you to 100m and the case integrity the rest of the way. If it passes a 10atm test you're good to go because there's no way a PRS18 case is going to give up the ghost at only 30atm.