Apple Watch Series 7 GPS 45mm Blue Aluminum Case Abyss Blue Sport Band - (MKN83LL/A) Brand Apple Color Blue Aluminum Case with Abyss Blue Sport Band Special Feature Activity Tracker, Heart Rate Monitor, Sleep Monitor, Blood Oxygen Compatible Devices Smartphone Screen Size 45 Millimeters Operating System WatchOS Age Range (Description) Adult Style GPS Connectivity Technology Gps Shape Square About this item 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 Stay in the moment with the new Mindfulness app, and reach your sleep goals with the Sleep app Track new tai chi and pilates workouts, in addition to favorites like running, yoga, swimming, and dance Track your daily activity on Apple Watch, and see your trends in the Fitness app on iPhone Sync your favorite music, podcasts, and audiobooks Pay instantly and securely from your wrist with Apple Pay