The battery is very good especially if you cut out some function that you really don’t use. Which I have cut some functions that I don’t use after 8 hours of work I’ll have maybe 50 to 60%. I could have more,but I can’t resist playing music from it while working. It’s comfortable and has some weight not as light as the Apple Watch 10 ,but it’s still light to me maybe cause I lift weights. And I love that I don’t have to take my phone with me to the gym also I still can listen to my music along the way to my gym paired with my beats. Only thing I don’t like is how sometimes Siri doesn’t respond when I raise my wrists and ask to ask a question other than that this watch is very handy so I would recommend it.