Have you looked at the LG Electronics G Watch? It seems to do what you want, and it is inexpensive as far as these things go. There are fancier models also. I suppose there are a quite a few Android watches do what you want. Going with Apple may save you some compatibility bugs. Let us know what you find out.
I have a Garmin Vivoactive also. I like it. Even though it doesn't do voice command, it is a good simple unit and easier to deal with than a cyclocomputer. The GPS function isn't really useful beyond telling you where you went after you're done.
9 of 10 times my smart watch is a Seiko 5 mechanical. Like many C&V'ers I'm also trying to get a break from tech immersion.