What is samsung watch 7?

As an AI language model, I do not have access to current or future products and models. However, as of September 2021, Samsung's latest smartwatch releases are the Galaxy Watch 4 and Galaxy Watch 4 Classic. Both models run the new WearOS software powered by Samsung and feature the latest health-tracking capabilities, including blood oxygen and body composition measurements. They also have improved battery life and are compatible with a wide range of apps for productivity and fitness tracking.