In the video, a person is seen holding a black flashlight in their hand. The person unscrews the top of the flashlight, revealing the battery compartment. The person then removes the battery from the flashlight and shows it to the camera. The battery appears to be a standard AA size. The person then replaces the battery in the flashlight and screws the top back on. The flashlight is then turned on, illuminating a dark room. The person adjusts the brightness of the flashlight by twisting the top of the flashlight. The video ends with the person turning off the flashlight.