I switched to the Ultra 2 about a year and a half ago and the battery life is excellent - I don't have to charge daily, I can run or hike for several hours while listening to music or podcasts being streamed from the watch. It actually allows me to carry my phone much less, since the watch can make/take phone calls too & let me pay for things. The battery life on the apple watch I had before this one, was really abysmal though.