I honestly cannot understand why you would want to watch something on a smart watch. i can just about understand a tablet because it's relatively portable, but even a phone is too small!
I watched YouTube on it once, because my phone died.... and I was somewhere that I wanted to leave but couldn't... So I was bored as fuck and that was the best thing I could do.
I have so many questions. How were you able to watch YouTube on your watch if your phone was dead? Are you one of those rich people who pays for a data plan for their watch? Or if you were at home on WiFi, what was preventing you from charging your phone? Didn't feel like getting up to grab the charger?
The watch is a WiFi one, it worked because it had the connection of wifi from there.
I wasn't home, didn't have a charger, and althought I could have asked for one my phone like was like dead I would have needed to be next to the plug to use it and in any case my hope was I could leave soon so I didn't want to bother.