Apple releases videos that show you how to use certain features on the Apple Watch Series 4

So let's say you have a sibling, a college buddy or a friend that you're very competitive with. If both of you own an Apple Watch Series 4, you can challenge each other to a seven-day head-to-head competition thanks to the new Activity Competition feature for the latest version of Apple's popular smartwatch. According to the video (found on top of this article), the first step is to open the Activity app. Swipe left and choose your opponent. After that is done, scroll down and clicking on "compete."

One of the most important features on the Apple Watch Series 4 is the heart rate monitor. On older versions of the device, the heart rate monitor has literally saved users' lives. To measure your heart rate on the timepiece, open the Heart Rate app. Keep still and scroll down to see your resting heart rate. Scrolling down will reveal your walking heart rate. A reading that is too high can indicate a health issue.

Want to make a call on your Apple Watch Series 4? Raise your wrist to activate Siri. Ask Siri to call a name from your contacts list. If you need to adjust the volume, turn the Digital Crown. And surely you know that the Apple Watch can track your workouts. To do this, open the Workout app, tap on the triple dot menu to set a goal, or tap on the activity itself to start your workout right away. Swipe right to end the workout, and scroll down for a summary including calories burned, average heart rate during the workout, and more.

The last video shows you how to summon help with the Emergency SOS feature on the Apple Watch. Try to memorize the brief instructions because you never know when this might come in handy and save your life. Press and hold the side button. Slide the "phone button" to make an emergency call. And that is all you need to do.