John Gruber of Daring Fireball has a clearish view on the new iPhone 6 and the wrist wearable thing:
I don’t know if it’s a watch. But as we get closer, everyone is saying it’s a watch. So for the sake of clarity I’ll call it a watch here, but I want my Being Right Points if it winds up being something that goes on your wrist but isn’t a watch.
If it has a screen, I’ll bet it’s square. And if it’s square, 320 × 320 pixels sounds about right to me. But here’s the thing I don’t understand: LCD screens are power-hungry. Watch batteries are necessarily tiny. I don’t see how a watch with a 320 × 320 display could get acceptable battery life, unless the screen is almost never on. And if the screen is almost never on, how is it a watch?