KNOW YOUR SLEEP SCORE—Sleep score provides an easy way to help track and understand the quality of your sleep, so you can make it more restorative. EVEN MORE HEALTH INSIGHTS—Take an ECG anytime. Get notifications for a high and low heart rate, an irregular rhythm, and possible sleep apnea. View overnight health metrics with the Vitals app and take readings of your blood oxygen. STUNNING DESIGN—Thin and lightweight, Series 11 is comfortable to wear around the clock—while exercising and even when you’re sleeping, so it can help track your key metrics. A POWERFUL FITNESS PARTNER—With advanced metrics for all your workouts, plus features like Pacer, Heart Rate Zones, training load, and more. Series 11 also comes with three months of Apple Fitness+ free. BIG BOOST IN BATTERY LIFE—With up to 24 hours of normal use. And fast charge for up to 8 hours of normal use in just 15 minutes. BUILT TO LAST—With a superdurable glass display that’s 2x more scratch resistant than Series 10. Series 11 also has a water resistance rating of 50m and is IP6X dust resistant. SAFETY FEATURES—Series 11 can detect a hard fall or severe car crash, automatically help connect you with emergency services, and notify your emergency contacts. Check In can automatically notify a loved one when you’ve arrived at your destination. STAY CONNECTED—Send a text, take a call, listen to music, and get notifications. Series 11 (GPS) works with your iPhone or Wi-Fi to keep you connected.