I upgraded from a series 7 stainless steel held onto it for a while as it just looks the best but the battery was becoming crap barely making it thru a day. The Ultra 3 exceeds the estimates immensely I'm EASILY getting 72 hrs on a single charge. I have been able to reliebaly sleep track and keep up with fitness goals knowing the watch won't be dead after 10 hrs.
I usually prefer the smaller watch face, but I’m loving this one! I especially love the band and the fact that it was an option included in the purchase of the watch; a better change of pace than the standard silicone. The satellite function is quite handy when you are traveling with zero reception! I haven’t used it for a call, but I did for a couple messages and it takes a minute to connect sometimes, but once it does it works-not fast like WiFi, but it gets the job done.