The video shows a close-up of a person's hand as they manipulate a black object with a silver part. The person's hand is seen pushing down on the object, and then pulling it back up. The object appears to be some kind of tool or device, and the person seems to be demonstrating how to use it. The silver part of the object is shiny and appears to be made of metal. The black part of the object has a matte finish and seems to be made of plastic. The person's hand is steady and precise in their movements, suggesting that they are experienced in using this type of tool.