In the video, a person is holding a knife in their hand. The knife has a black handle with a textured surface, and the person is using their thumb to push a button on the handle. The button is located near the top of the handle, and when pressed, it causes the blade of the knife to extend. The person's hand is steady as they manipulate the knife, and the blade moves smoothly and quickly. The background is blurred, but it appears to be an indoor setting.