Call with dual sim support
Customize the Watch Face
Adjust Home button
It is important to know that after the merger of Wear OS and One UI. One UI Watch 4.5 is the second upgrade. The One UI Watch 4.5 is based on Wear OS 3.5
I expect that after reading all of the above, Tech enthusiast users really want to know which Samsung watch will get the one UI 4.5 update after the stable release.