There are three different color tortoises. While the magician’s back is turned, the spectator picks a tortoise and puts it in the box, places the lid on, and hides the other two tortoises in their hands. When the magician turns back around, they claim they can tell which color is in the box. It’s at this time the magician pulls out a tube and begins to look through it at the box. A few mimed adjustments on the tube, the magician looks again. At this point, the magician puts down the tube and correctly names the right color. The tube, the box, the lid, the tortoises, all can be examined, and nothing adjusts on the tube. It was all a red herring. Comes with box, three tortoises, and x-ray tube.