It's the Samsung Galaxy Watch4 smartwatch
Very good smart watch, this is their new 2021. Many dial can be selected, charging speed and fast, pairing Samsung's mobile phone is very fast, and the use is very smooth, no stuck. It's also waterproof, so you can wash and shower without taking it off. The most distinctive feature is that the rotating dial can reduce pressure
This is generally a store activity, the specific model is random, not fixed.