So far I haven't had any toys break and when I review I do test it if it is really waterproof. I have a three part method:
1) Dunk it see if it there is any signs of water getting inside,
2) use it the shower, again check for signs of water getting in, if it survive that we move on to...
3) chaos's 2-hour waterproof vibrator torture test: 1 hour submerged with the vide off followed by one hour with the vibe on at max strength.
So far all toys have survived although I'm doubtful about the one I just got for review, we'll see about that one.