Apple Watch Series 11 brings invaluable health insights, including high or low heart rate notifications and sleep score tracking for improved sleep quality. Boost your fitness with advanced metrics for all workouts. Enjoy up to 24 hours of battery life on a single charge. Key Features: - HYPERTENSION NOTIFICATIONS: Can spot signs of chronic high blood pressure. - KNOW YOUR SLEEP SCORE: Track and understand sleep quality. - MORE HEALTH INSIGHTS: ECG, high/low heart rate notifications, irregular rhythm, sleep apnoea detection, Vitals app, and Blood Oxygen readings. - STUNNING DESIGN: Thin, lightweight, and comfortable for 24/7 wear. - POWERFUL FITNESS PARTNER: Advanced metrics, Pacer, Heart Rate Zones, training load, and Workout Buddy powered by Apple Intelligence. Includes three months of Apple Fitness+ free. - BIG BOOST IN BATTERY LIFE: Up to 24 hours of normal use, with fast charging. - BUILT TO LAST: 2x more scratch-resistant glass display, 50m water resistance, and IP6X dust resistance. - SAFETY FEATURES: Fall detection, car crash detection, emergency services connection, and Check In. - STAY CONNECTED: Send texts, take calls, listen to music, use Siri, and get notifications via iPhone or Wi-Fi. Important Notes: - Requires iPhone 11 or later with iOS 26 or later. - Hypertension notifications are for users 22+; not for those previously diagnosed with hypertension or pregnant individuals. - Data plan and cellular service may be required for certain features. - Battery life varies by use and configuration. - Apple Intelligence features require a compatible iPhone and Bluetooth headphones. - ECG app is for users 22+. - Irregular rhythm notification is for users 22+ or those without a prior AFib diagnosis. - Sleep apnoea notifications are for users 18+ without a diagnosis. - Vitals and Blood Oxygen apps are for wellness purposes only. - Apple Fitness+ requires a subscription. - Fast charging compatible with Series 7 and later, Ultra models, and SE 3. - Water resistance is not permanent and may diminish over time.