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 changes for advanced insights into your menstrual cycle. And with Crash Detection, sleep stages tracking, and advanced workout metrics, it helps you stay active, healthy, safe, and connected. | Apple Watch Series 8 (GPS + Cellular) 45mm Midnight Aluminum Case with Midnight Sport Band - Medium/Large