The video shows a person wearing a black smartwatch on their wrist. The watch has a circular face with a red heart in the center. The person presses the heart on the watch, and a heartbeat line appears on the screen. The person then presses the heart again, and the heartbeat line disappears. The screen then displays a message that says "Try to keep still." The person presses the heart one more time, and the screen shows a red pause button and the text "Normal resting heart rate 48 bpm."