A:AnswerIt has a rubber sealant outlining the screen that is supposed to keep water from entering. I wouldnt get this case with the intention of taking underwater photos. A little splash shouldnt hurt it though
A:AnswerIt depends on the protector thickness. I had a tempered glass one, and the case did not fit tight enough to seal water out around the screen so I had to take it off. But a thin scratch protector should be fine.
A:AnswerThe case is a flat color which doesn't really shine bright. But the blue is distinct and the back to the case is clear. I personally am happy with this case because if I scratch the case on the blue it won't be so obvious because the color is flat. I would assume if it was shiny you could see the scratches easier as the shine dulls out.