In the video, a person is holding a blue and black device in their hand. The device has a screen that displays some information. The person is using a red wire to connect the device to a car battery. The screen on the device shows the voltage of the car battery, which is 14.36V. The person is holding the device with their left hand and using their right hand to connect the red wire to the car battery. The background is blurry, but it appears to be the interior of a car.