Stay connected to family and friends with calls, texts and email, even when you don’t have your phone Stream music and podcasts on the go, and leave your phone at home Always-on Retina display has nearly 20% more screen area than Series 6, making everything easier to see and use The most crack-resistant front crystal yet on an Apple Watch, IP6X dust resistance and swimproof design Measure your blood oxygen with a powerful sensor and app Take an ECG anytime, anywhere Get high and low heart rate, and irregular heart rhythm notifications