A Twitter leak suggests that OnePlus is working on a smartwatch. Earlier reports suggested that it would sport the Oppo Watch's square aesthetic, but the OnePlus Watch will allegedly have a round screen. OnePlus will likely unveil it alongside the OnePlus 8T.
https://www.notebookcheck.net/OnePlus-Watch-reportedly-in-the-works-will-allegedly-come-with-a-round-screen.492744.0.html