If it has a flashlight and is beyond waterproof, I would maybe consider it. My Garmin Epix watch is practically bullet proof. I've dove with it in open ocean. I've jet skied with it. I rock climb with it. It's surived 108miles of Unbound (the race) in mud, sun, sweat. I've water rafted with it. I've swam in crappy lakes, streams and jumped off cliffs. Hottubs? also no problem. Zero chance a iWatch would ever survive…
Zero chance a iWatch would ever survive these conditions. Mine survives such things just fine. My Garmin Epix watch is practically bullet proof. And your Epix cost about twice as much as the Una watch does.
And iWatch doesn't have a flashlight. And iWatch doesn't have the same battery life.