42 mm black LTE HORRIBLE battery...I get maybe 10 to 12 hours with basic use...i.e. using it as a watch....if I use it for excercise 30 min or so, I get about 6 hours of battery life. Dealing with Samsung on this issue has been a real pain. I now have to send the watch in for repiars. My advice if you are looking at the 42 mm with LTE hold off....there are some real problems with at least some of these models.
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