Apple Watch Series 6 GPS 40mm Product Red Aluminum Case with Product Red Sport Band | M00A3 GPS model lets you take calls and reply to texts from your wrist Measure your blood oxygen with an all-new sensor and app Check your heart rhythm with the ECG app The Always-On Retina display is 2.5x brighter outdoors when your wrist is down S6 SiP is up to 20% faster than Series 5 5GHz Wi-Fi and U1 Ultra-Wideband chip Track your daily activity on Apple Watch and see your trends in the Fitness app on iPhone Measure workouts like running, walking, cycling, yoga, swimming, and dance Swim proof design Sync your favorite music, podcasts, and audiobooks Pay instantly and securely from your wrist with Apple Pay High and low heart rate notifications and irregular heart rhythm notifications Built-in compass and real-time elevation readings Can detect if you have taken a hard fall, then automatically call emergency services for you Emergency SOS lets you get help from your wrist Watch OS 7 with sleep tracking, cycling directions, updates to Siri, and new customizable watch faces Aluminum cases available in new finishes Apple Watch Series 6 requires an iPhone 6s or later with iOS 14 or later. Apple Watch Series 6 lets you measure your blood oxygen level with a revolutionary new sensor and app. Take an ECG from your wrist. See your fitness metrics on the enhanced Always-On Retina display, now 2.5x brighter outdoors when your wrist is down. Set a bedtime routine and track your sleep. And reply to calls and messages right from your wrist. It is the ultimate device for a healthier, more active, more connected life.