Using an Apple as a watch

You would be better off getting a FitBit watch if you digital smart watch functionality. If you just want to tell time, then Timex, Casio watches. There are many other much less expensive watches that will tell time.

But if you want Apple Watch "Smart" functionality, you need an iPhone.

If you are an Android users, then look at some of the Android watches. And like I said, FitBit is making some interesting smart watches.

to set it up an iPhone is required even if its not yours

and your activity and the likes will be added to the activity app on the iPhone its connected to

its not really meant as a stand alone device

only with very limited functionality