I would never take any of my reps in the pool , lake or ocean.
The consistency is simply not there in the craftsmanship of these replicas. I recently fixed someones watch for them and pulled two different length and type of crown stems (out of the exact same watches) I've watched each twist of a crown draw shavings of metal until it's own threading was accepted, I've seen many misplaced (out of it's track) case back gaskets or pinched gaskets from factories using the wrong size gaskets. I've seen many dry rotted gaskets,
I've seen misplaced aligned crystal gaskets, I've found watches with no crown gaskets, I've seen stripped case back threading, what does chlorine or salt water or water in general do to crappy glue used on the back of bezel inserts..
oh.. you cant run up to walmart to swap your watch for not living up to being water proof.
too many possible problems to risk it imo..