Hello all, I have read through this thread and several others regarding the wrist/hand/arm pain.
I received my apple watch on December 29th, 2016. I ordered the SS with the Milanese loop. I noticed on the first day that my arm ached. I thought it was just due to the new device and looking at the watch face. I switched arms and experienced the same pain on the right side. I thought I would just get used to the watch. I watched the tutorials on how to wear it and adjusted the band accordingly.
My husband is a physician and I mentioned the pain to him. His response was that I was having anxiety and that the pain was most likely due to the newness of the device and me thinking about it too much.
Over the week, the pain became worse, almost like a carpal tunnel effect, causing pain in my ring finger in the hand of whichever arm I was wearing the watch. Yesterday, my husband offered to wear the watch for awhile. Fifteen minutes into wear, he said he felt the same thing I did: His arm ached and he felt discomfort. My son tried it on and experienced pain and muscle twitching.
I have put the watch in airplane mode and also switched the watch completely off. The effect is the same. I ordered a sport band and that arrived today. It seems as though I have become even more sensitive to the pain, as almost immediately I felt pain from the watch after putting it on with the new band.
I have contacted Apple and they have been very helpful. I am going to try a different watch case (maybe an aluminum one) to see if that helps.
I wanted to give an update, letting you know that even my husband thought I was crazy, but experienced the same sensation as I did. The only thing I can think of is there is some effect with the charging base on the back of the watch. Even with the watch turned completely off, the members of my family and I can feel pain.
I hope this answers some questions for those of you wondering about the pain and when it occurs. I think it is really weird, and I am super bummed because I absolutely love the watch and all of its' features, and I want it to work for me.
