Today will be my first full day. As of right now I have had my watch on my wrist for 3 hours and I'm down to 90%, I had around 10 or so notifications pop up and a handful of screen touches to see the time and an unknown amount of times the watch face was on because of movement. I also messed around with watch faces for about 1 minute. Side note: my review won't be typical because my job is not a place to wear a watch like this. So for 8 hours out of the day I won't have it on me. I'll easily get a full day. Possibly 2 days? We'll see.