Just wanted to share my thoughts on this feature for everyone who is still waiting and is wondering about this like I was before I received my SS white yesterday. I was wondering how they were going to implement this, and was afraid you would really need an exaggerated motion to activate the screen when raising your wrist to look at it. Turns out it's way to sensitive and I would say that after 1.5 days of usage, probably 90% of the activations are unintended. It basically takes a very subtle turn of your wrist inward to activate. Like right now as I'm typining on an iPad in my lap, it's activated a number of time. This will kill battery so hopefully they tweak this over time. And yes I know you can turn this feature off and only activate by tapping it, but that requires both hands and there are many times when that's not desired (carrying groceries in your other hand for example).