As for size, I never thought it was too small. In fact, I would say it's a perfect size for my wrist.
But I find it almost completely useless for reading notifications from my phone. The small screen + no way to recall notifications if you don't watch the whole thing scroll past when it originally comes in are very frustrating. Plus it's very annoying that despite having users asking for this for years they have not implemented a "find my phone" feature.
However I don't have anything on that screen by default to extend battery life closer to a month.
Two more features I highly appreciate:
- I don't think I could go back to an alarm on my phone. Smart wakeup really works wonderfully.
- Even when battery's at 0%, basic functionality (telling time, counting steps) still works for like a week or two.