Baring the 1st day(Wednesday) where I played with the watch nonstop, and had about 20% charge after wearing it 12 hours. I am finding that the watch has a very reasonable 48 hour cycle per charge. I put the watch on Saturday at 2 p.m. with a 100% charge, today on Monday at 11:30 a.m. my time I still have 27% charge left. That is after being out all day Saturday and Sunday, and using the watch in a "normal" manner. I was even playing the game Lifeline the last 2 days. Also I have not taken the watch off at all, I have slept and showered with it the last 48 hours, and it was performed perfect. I get all notifications through it except emails. I know "normal" usage is very subjective, but I check my time a few times a hour, deal with iMessages, and have used the timer and maps a few times, even had a short 5 minute phone call via the watch.