water vs watch

Sorry to hear. Here is some general guidance regarding that matter:

About Apple Watch water resistance - Apple Support

The first models were still lacking in this area. You could try to see if this helps:

If your Apple Watch won't charge or it won't turn on - Apple Support

Then that is not normal behavior at all. Check the updated article on that same topic in here:

Important handling information for Apple Watch - Apple Support

If the issue remains, I recommend contacting support. With the S6 you are still well within the warranty period.

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