I have a 4s since 4 weeks.
At the beginning, reading the forum, I was a bit concerned that in fw3.6 there were many issues.
The battery drain, the led blinking etc
Actually, the battery drain wees indeed a bit surprising. 3 days without recording an activity.
It went better during the first 2 weeks, let's say 3,5 days battery duration. I upgraded then to fw 3.8.
Then I tailored the device:
BT off
Wifi off
Pulse ox off
IQ move on
Back light 10%, is enough for me
No alerts etc, I don't need that
Auto lock
Hr monitoring on
Face watch with all the data I look at: steps, floors, battery, digital clock, calories, hr
During night I observe 2% battery drain
The sleep time start is always off, since I usually sit on the couch watching TV or reading before going to bed. I just need to edit the timing afterwards. I think , in that sense, the watch works fine. It finds me standing still, so after 10.30pm he assumes I'm sleeping.
The blinking after activity, doesn't really bother me. The watch will stay on my wrist after an activity, and I set the hr to be on always, so in my case it's continuing doing is job. Actually I recently have done an activity and afterwards , while taking a shower, 30 min after stopping three activity, I took out the watch and wasn't blinking at all... so might be a temporary effect. Maybe the sw needs some data buffer before stopping the blinking.
Anyway, now with my setup, I have reached 5 days of battery, and still 22% of charge.
Not so bad
