The Apple Watch Series 4 features a 44mm curved watch face with an LTPO OLED Retina display and digital crown. The crown is how you navigate through watchOS 5 to view apps and content. The crown has haptic feedback, giving each turn a mechanical click-like feel, and an integrated titanium electrode lets you use the ECG app.
With the new Electrocardiogram app, you can get a comprehensive reading of your heart activity. The app also tells you of any irregularities for you to have checked out. This means your physician can get a better idea of how your heart is doing without ordering any expensive tests.
It can also detect and monitor your workouts, giving you essential metrics to help you reach your goals. It’s water-resistant up to 164′, so you can record laps on a track or in the pool. Even when not working out, the Apple Watch utilizes three activity rings to motivate you to keep moving throughout your day.
The Apple Watch Series 4 stays connected to the outside world via Wi-Fi or a wireless Bluetooth connection to your iPhone. When connected, you can use the watch as an extension of your phone to view text messages, interact with Siri, navigate via built-in GPS, or make handsfree calls with the integrated speaker and microphone.
You can help stay motivated during workouts by streaming your favorite music, podcasts, or invite a friend to a seven-day challenge. In a competition, you’ll share your activity and compete for bragging rights and digital medals. Notifications of your friend’s progress act like a personal trainer to keep you going.
Generate an ECG Anytime, Anywhere
The built-in titanium electrode in the digital crown and the sapphire crystal electronic heart sensor on the back of the Apple Watch gives you the ability to record your own ECG, or electrocardiogram. It’s similar to a single-lead electrocardiogram and takes only 30 seconds to create. Just touch the digital crown and wait for the Apple Watch to generate your ECG waveform.
The ECG app is meant to help you detect whether you’re heart’s beating at a normal sinus rhythm, or if your rhythm shows signs of irregularity, or atrial fibrillation. Your ECGs are stored in the Health app on your iPhone and you can share them with your doctor.
Communicate with other friends that own Apple Watches by using them like walkie-talkies. Just press to talk and let go to listen.