So I let my skin to fully heal and was instead wearing the watch on my right hand, upside down. Today I have noticed that I have red skin, or a rash there also. This is a bit weird now, as I never had this issue in the past and started about the time (on my left arm) when I got the Race 2. I simply cannot wear it for a longer period of time. I am cleaning it after every activity. Can it be that the material from which the sensor is made is somehow different?