Uodate**I have worn this watch now for a while and while I love it, it gets hot. And when it takes my heart rate, it burns.. I don't have sensitive skin and I have had no problems from other types of watches, apple and fitbit.I have always love samsung over all other options! I have been an avid samsung user for almost as long as they have been a thing. I messed up and switched a year ago to a competitor and hated it. But didn't want to spend the money on a new phone and watch so quickly. Well, I finally had enough and ordered a new samsung phone and watch. This watch is amazing! The battery lasts as long as I need it to, I charge it nightly anyway. I have not gotten any burns on my wrists but I don't have sensitive skin. Once the watch was all updated, the battery did last longer. The updates will drain it fast! Glad I took the plung! My watch did have one error that I had to figure a work around for, I'm in the US and when setting up the watch initially, once I choose English (united states) then it wanted to know country location. The US was not one of the options. So I randomly chose one, this hasn't hindered the watch functions!