Apple Watch Series 8 has the most impact-resistant Apple Watch front glass ever, IP6X dustproofing, swimming-proof construction and better durability for versatile sports and activities. The large, always-on, edge-to-edge screen makes it easier to keep an eye on the performance. Thanks to the all-day battery and fast charging, the watch is always ready for use. Apple Watch Series 8 is a powerful companion for health monitoring. It has advanced health sensors and apps, so you can take an EKG, measure your heart rate and blood oxygen level, and track body temperature changes to get accurate information about your menstrual cycle. Body temperature detection provides an estimate of ovulation retrospectively and advanced features for monitoring the menstrual cycle. With the help of crash detection, sleep stage monitoring and advanced training data, you stay active, healthy, safe and connected. Stay active with customizable workouts and more advanced information. The improved Traini app contains more advanced information and ways to train. You can monitor your daily activity on the Apple Watch and view your own progress in the Fitness app on the iPhone. With sleep stage tracking, you can see how long REM, basic or deep sleep stages are. Fill your activity circle when you reach your own daily goals and fuel your motivation by listening to music, podcasts and audiobooks from your watch.