So this is a question I haven't seen anyone in the press considering at all. Everyone seems focused on whether the watch will make it through an entire day or not, which is important. But I would argue that equally important is what happens with the battery over time? If we're just going to get a day out of this thing when it's brand new, what will the battery life be like when the thing has gone through a few hundred recharge cycles? My wife's iPhone 4S is three years old now, and even though she charged it over night, by the time she got to work this morning she was already down to 27%. We've all deemed this to be acceptable because everyone replaces their phone every couple of years anyway. Are we really going to have the attitude that our watches will now be pretty much useless after two years also? The one shining hope in all of this is that we've also pretty much accepted not being able to replace watch batteries on our own either. Every mall has that watch battery kiosk by the food court or whatever. I'm really hoping Apple has plans in the works to offer quick battery service in their stores at a reasonable price. A lot of people are going to be pretty ticked off if they learn that they have to leave their watch at the store for a week, or worse send it in, and it's going to cost them $100+.