Apple Watch is the world's most popular smartwatch — and one of the most powerful health tools you can wear. Built around the watchOS ecosystem, every Apple Watch model is designed to work seamlessly with iPhone and deliver real-time health insights around the clock. From FDA-cleared ECG and irregular rhythm notifications to blood oxygen monitoring, crash detection, and fall detection, Apple Watch is built to keep you informed and protected. Whether you're hitting a personal record, managing your sleep, or simply staying connected throughout the day, Apple Watch makes every moment count. Available in three distinct lines — Apple Watch SE, Series 11, and Apple Watch Ultra 3 — there's a model for every lifestyle and ambition.