Apple Watch allows you to receive notifications, track activity, and launch apps from your wrist. It notifies you of important messages and reminders with a gentle tap. You can customize the watch face and choose from different strap designs and materials. Siri allows for quick, fun interaction by letting you control music, respond to messages, open apps, make calls, and check scores and news. The Activity app uses three rings to track and motivate daily activity levels, and it includes workout and training apps.