Comment Phone has zero tolerance, Watch has much more (Score 1) 174
What is Apple's warranty policy for water damage?
In terms of warranty support, the iPhone is not meant to be at all water resistant. Thus the sensors, and sometimes refusing to service if it's be obviously compromised (though Apple is sometimes lenient if you have Applecare).
The watch though is a different story. Although they may have water sensors inside, the expectation and warranty promise is that it can take significant contact with water. Rain is absolutely fine, immersion down to one meter up to 30 minutes long is also fine.
So if you bring in a water damaged Watch, it's a lot harder to say if it was because you exceeded allowed parameters. Perhaps it measures any duration under-water?
That said, AppleCare for the watch gives you up to two body replacements, so if you get AppleCare and swim for a day which wrecks the watch, you can probably just get a new body.