In the video, a person is holding a black smartphone in their left hand and a black and green phone holder in their right hand. The phone holder has a circular green button on the side. The person attaches the phone holder to the back of the phone and then presses the green button, which causes the phone to vibrate. The person then removes the phone holder from the phone and presses the green button again, causing the phone to vibrate once more. The background is a blue table with a yellow circular object on it.