I just picked up a 44mm Apple Watch yesterday morning when the Apple store opened... took it off the charger last night around 1 am and the battery seems to be draining faster than my 2 year old series 2. With the series 2, I could wear it all night and have 100% still when I woke up - this morning I was already down to 93% when I woke up. I’m at 4 hours used/16.5 hours stand by and 62%.
I am using the new info graphics watch face with activity rings, calendar, weather, weather conditions, wind speed, HeartWatch, battery, and monogram. I’ve left everything on except detect gym equipment as I never use gym equipment that can sync with the watch.