@shad0w, Mine is. I can swim with it, (even long swims, in seawater) and normal showering is fine, for mine atleast.
I think yours is able to do the same, fill a bowl with warm water, and drop your watch in. If you see any bubbles, take your watch out directly; it's not water-resistant.
No bubbles after 2 minutes of being in? Leave it for 30 mins - 1 hour.
No water inside? Your watch is able to do the same as mine.
Greets!