Stay connected, healthy, and safe with the Apple Watch Series 5. You interface with all of the Series 5's features and the watchOS through its 40mm curved watch face with an LTPO OLED always-on Retina display. With an always-on screen in low-brightness, you can quickly glace at the watch face for the time, workout stats, and more. If you lift your wrist, the screen will automatically come back to full brightness. The case also features a digital crown with haptic feedback, and a heart rate monitor that's capable of recording your own ECG. The heart rate monitor is joined by fall detection and SOS emergency functions to help keep you safe while you're out for a run or at home doing chores. These features can detect elevated heart rates, which can clue you into possible health issues, as well as detecting if you've taken a hard fall. If you do, the Apple Watch gives you the opportunity to contact emergency services and emergency contacts for help. Staying healthy is at the core of the Apple Watch Series 5. The Activity Rings feature provides you with three rings that correspond to movement, exercise, and standing. They motivate you to keep mobile throughout the day and close your rings to achieve personal goals.The Apple Watch also tracks your workouts. It can automatically detect that you've started to exercise, prompting you to activate the Workout app for stat tracking, measuring calories burned, and much more. The Apple Watch Series 5 keeps you in touch with the world around you. Utilizing both Wi-Fi and Bluetooth wireless technologies, the Apple Watch becomes an extension of your iPhone. View and respond to text messages, get notifications, navigate via GPS, interact with Siri, make and take hands-free calls, and more. Even with an always-on display, the Series 5 smartwatch is made to deliver up to 18 hours of battery life, and is water-resistant up to 164', so you can wear it all day in any kind of weather.