I think I have the newer iWatch, so I'm unsure about previous models, but I can ...

r00fus · on May 10, 2017

My series0 (2015 model) with watchOS3 gets about 1.5 - 2 days on a charge.

Some days it barely gets a day - still haven't figured out if this is due to excessive timer usage (kids!) or messages or something... but it's rare.

I've slept with it on and simply put it in the charger while I shower/dress/eat and it's full.

barsonme · on May 10, 2017

ugh, the timer! Do you use the chronograph watch face too? I always accidentally hit the stopwatch and 3 hours later realize it's been running the whole time.