Pete Lau (CEO and Founder of OnePlus) Tweeted a few weeks ago about the OnePlus Watch. "Many of you said you wanted a watch, and as you might have heard over the weekend—we're making one, to be released early next year.", Pete Lau said.
Ishan Agarwal, who has a good track record regarding unreleased devices and accessories, now posted renders of the alleged OnePlus Watch. He says he extracted these renders from the OnePlus Health app, which earlier appeared in the Google Play Store.
According to Ishan Agarwal, the OnePlus Watch doesn't seem to run WearOS. That's notable, as Pete Lau suggested/hinted in an interview that it may run WearOS.