No speaker but it has a mic. You can initiate or accept calls but they switch over to the phone. What happens is a call comes in and a scrolling marquee at the top of the display tells you to answer the call on your phone. In fact unless you have your phone silenced the phone will still ring. You can decline the call from the watch, though. But you can't answer it from the watch. You can dial a call on the watch and it's easy to do. But then you have to pick up your phone to actually talk. So...what's the point?
The Mic is for dictating texts. Typing texts would be a nightmare from what I can see of the keyboard as it's a standard phone keyboard. The mic works well though. It's a Bixby feature but works fine despite me being connected to a Pixel.
It's more of a fitness band in smart watch form than a true replacement for an Apple Watch.
It so far does a lot of what Fitbit did for me. I appreciate the notifications. The Bluetooth range is impressive to me. I lose connection if my phone is upstairs and I go to the basement and walk outside. I'm not sure how many feet that is but it's a big house...so.
This device can probably free me from my Apple Watch/iPhone dependency. But I will need more than one day to figure this out. It is sporty looking. It is not elegant, but it's got a clean modern look. I think Samsung will likely release an update to their more elegant watches eventually.