I like it, battery is much better than what reviews have been saying. Been on all day and still on 80% (plus I assume battery will get better as it's only had a couple of charges so far)
I use stock email and messaging apps so no probs with those notifications. Can't read hangouts but that doesn't bother me, when at work I can now see if it's worth digging out my phone from my bag to respond to things.
Camera is not great though, but I didn't really get it for that. Calls using speaker is great, but only in the right situations.
Love the "find my phone" function as I constantly forget where I leave it around the house....
Oh yeah and it tells the time
Best use.......reminders from the calendar for where I need to be during the day (at work) - awesome
I've heard some reviews say that to turn the watch on using the accelerometer is difficult and the movement needs to be over exaggerated. I've found this to be not the case at all, turns on easily every time, with very little movement as long as your looking at your wrist