Delivering a new evolution in fitness tracking, health management, and mobile communication, Apple has upgraded key aspects of the Watch Series 7 to benefit everyone in your family. The Watch Series 7 is more user friendly, with an always-on OLED Retina display that provides approximately 20% more screen area than the Series 6, and 50% more than the Series 3. Apple achieved this by making the borders roughly 40% thinner than the Series 6, so you get more screen without adding bulk.