I have the 42mm SS and my wife just yesterday bought the 38mm Rose Gold Sport, I finally talked her into trying one on at the Apple Store and she loved it so we got her one. Here is my question, it came running OS2 and we bought it around noon and by 5:00 it was in power reserve and we charged it to 60% and by midnight it was dead again. I unpaired her watch and rebooted the phone and watch and paired it again and today she put it on around 10:30 this morning and now it's at 40% (it's now 8:12pm) and she only used it once today to look at some texts. I don't think this is normal but I know the 38mm has a smaller battery than mine, but I've used mine several times today and I'm still at 60% and mine has been off the charger since 7am. Should I take it back to Apple for a swap? Since its within a few days can I return it for a new one without getting a refurbished one or should I actually return it and get another one?