PRODUCT OVERVIEW:Apple Watch Series 8 features advanced health sensors and apps, so you can take an ECG, measure heart rate and blood oxygen, and track temperature changes³ for advanced insights into your menstrual cycle. With Crash Detection, sleep stages tracking, and advanced workout metrics, it helps you stay active, healthy, safe, and connected.KEY FEATURESWith cellular, stay connected even without your iPhone nearbyStream or sync your favorite music, podcasts, and audiobooksSet up and manage an Apple Watch for each family member, right from your iPhone, with Family SetupThe temperature sensor provides retrospective ovulation estimates and advanced cycle tracking featuresMeasure your blood oxygen with a powerful sensor and appTake an ECG anytime, anywhereGet high and low heart rate and irregular rhythm notificationsAdvanced safety features, including Fall Detection, Emergency SOS, and Crash DetectionA completely redesigned Compass app with waypoints and BacktrackTrack your daily activity on Apple Watch, and see your trends in the Fitness app on iPhoneThe most crack-resistant front crystal yet on an Apple Watch, IP6X dust resistance and swimproof design, and increased durability for fitness and activityCall, text, and email with just a few tapsMake purchases instantly and securely from your wrist with Apple PayLarge, Always-On, edge-to-edge displayAll-day battery life and fast chargingSleep stages tracking lets you see how much time you spend in REM, core, and deep sleep