I have withings watch and it's pretty great. I think it's less well known than a lot of other brands because they primarily make health tech (which is also good btw).
I love that the watch has a traditional dial and looks really classy rather than just looking like a piece of plastic tech. I get compliments on it all the time and nobody guesses that it's a smart watch. It has a small smart screen under the 12 that shows steps, o2 levels, and heart rate. I track sleep and workouts on it, and I think you can get call notifications on it but I don't really use that. All the info is synced to an app and if you have other devices like the scale and blood pressure cuff you can track all of it and create a report to take with you to your doctor. The company has a solid privacy policy which makes me feel better about using it.