Waterproof I have not tested.
The deduction of points there for the knartschen (now knew no other word for it ^^) that you get when you have a slight pressure on the site carries, at which there is the gap to open the Case.
Just as it always has his finger on the telephone. This sucks a bit.
And you should be aware that most of accessories depends on the exact size of the S5, is not satisfactory.
See Covers, Cases, etc ...