In the video, a person is holding a green and yellow multimeter and using it to check the voltage of a car battery. The multimeter is being held with the person's left hand and the yellow clamp is being used to connect to the positive terminal of the battery. The person is wearing a black shirt and the car battery is located under the hood of the car. The person is checking the voltage by pressing the red button on the multimeter and the digital display shows the voltage reading.