Overview Stay connected and monitor your activity with the GPS and cellular-equipped Apple Watch Series 3. This stylish, new generation smartwatch comes in two case sizes (38mm and 42mm) and is packed with useful features that will help you stay active and healthy, aside from bringing your iPhone apps and functions to your wrist. Simply connect it to your iPhone via Bluetooth 4.2 to get real-time notifications and more on your watch display. It can also connect directly to the internet using 3G and 4G LTE or the available Wi-Fi connections. Enjoy features like the Workout app, which automatically detects your workout and challenges you with regular activity results to bring your fitness to a whole new level. Built-in health features include alerts to low heart rates and irregular heart rhythms. Connection to GPS allows you to track your run and even receive calls without your iPhone. Stream Apple Music and Apple Podcasts, ask Siri a question by simply raising your wrist, and talk to friends using the Walkie-Talkie app hands-free. The Apple Watch Series 3 is compatible with the iPhone 6 or later (iOS 12 onwards), is water resistant, and is available in a range of colors, styles, and materials.