I like the idea of smartwatch, moreover if it is from Apple. However, I would like to know what it do can offline without iPhone. other things like music, messages, calendar will require iPhone. So what it can do unteethered, as a standalone product? Surely, it can show time; the Apple website says it keep time well; It can measure movement for sure, heartbeat too; what else? the more I think of Apple Watch, I can't find many justifications for its separate existence from iPhone.