I have the beginnings of a rash with bumps directly under the watch. I bought my 42mm Galaxy Watch back in May 2019 along with a metal band (rose gold watch with rose gold band). I never used the rubber band that comes with it. Not to sound too paranoid but I wonder if the laser is actually the culprit. I have turned off the heart rate sensor through the health app but I see where the laser still turns on at times, as if that watch is using it to determine if it is being worn. Anyway, my 2 cents.
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